| 1. |
- Alonso Fernandez, Iñigo, 1985, et al.
(författare)
-
Designing Multi-Technological Resilient Objects in Product Platforms
- 2022
-
Ingår i: Proceedings of NordDesign 2022: How Product and Manufacturing Design Enable Sustainable Companies and Societies.
-
Konferensbidrag (refereegranskat)abstract
- Uncertainty about the market, environment, and technological landscape of the future challenges the ways companies utilize the notion of “product platforms” to gain efficiency during development and production. This paper reviews design approaches to cope with uncertainties and highlights the benefit of designing a platform to enable “resilience” to deal with uncertain situation without the need to change the structure or configuration of the product platform. To achieve resilience, the paper proposes to introduce “resilient objects” in regions of the product platform that are likely to be most affected by change. Resilient design objects are already common in practice, such as a spring-damper system in mechanical systems. However, since product platform are multi-technological, this paper proposes a way of representing generic resilient objects (along five different design domains) for multi-technological systems. This proposal is supported by illustrative examples. Future research opportunities are identified around extending the matrix of generic multi-technological resilient objects, and defining a systematic method to design, select and evaluate which resilient objects are more valuable to be inserted in specific regions of the product platform.
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| 2. |
- Alonso Fernandez, Iñigo, 1985, et al.
(författare)
-
Identification of Technology Integration Challenges at Two Global Automotive OEMs
- 2020
-
Ingår i: Proceedings of the Design Society: DESIGN Conference. - : Cambridge University Press (CUP). - 2633-7762. ; 1, s. 2245-2254
-
Konferensbidrag (refereegranskat)abstract
- Platform design has been firmly established in the automotive industry as a strategy to provide wider product variety while maintaining cost effective production. But this strategy can struggle to keep up with the pace and nature of emerging technologies. This paper reviews the existing approaches to modelling product platforms, and showcases the challenges at OEMs introducing new technological innovations in their platforms. A gap is identified in the methods to assess the ability of existing platforms to integrate new technologies whenever they become available.
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| 3. |
- Alonso Fernandez, Iñigo, 1985, et al.
(författare)
-
Interactive model-based decision-making tools in early product platform design
- 2020
-
Ingår i: Proceedings of the NordDesign 2020 Conference, NordDesign 2020.
-
Konferensbidrag (refereegranskat)abstract
- Integrating new technologies in existing product platforms presents challenges not only when the decision of going ahead with the integration is taken, but also in the earlier design of the platform structure to accommodate hypothetical changes in the future. Common heuristics do no guarantee that the optimum solution can be found to these kinds of problems, and biases lead to systematic distortions in decision-making. Additionally with the global zeitgeist around sustainable development, decision makers will increasingly ask for paths to many different versions of success, not just the traditional profit maximization one. A set of common models that accompanies the product platform all through its lifecycle to support decision makers can enable better fulfilment of the expectations of all stakeholders. But it is difficult to unify and objectively gather the views of multiple stakeholder simultaneously. An interactive modelbased decision making support system is proposed as a tool to solve the mentioned challenges. In this paper we describe and experiment with the main technological foundations of such a tool. These include an web-based front end, and a real-Time NoSQL database in the back end. The client web application (webapp) enables user inputs, runs quantitative models, and visualizes results. The database records results and enables the use of common inputs and common visualization of the results. The models that run directly in the client are developed offline and can be continuously deployed with no downtime for concurrent users. The technology stack used demonstrates that rapid prototyping of tools using state-of-The-Art web technologies provides quick results and enables researchers to make quick iterations that can be easily deployed in industrial use cases. The presented method is a new approach to providing digital support to the design process, by enabling better informed decisions during the product development process early phases. In this paper, an introduction and background to the problem and current state of the art is summarized, a method to approaching the topic is described, an experiment performed in front of a life audience is presented, and hints for future developments are considered in the discussion and conclusion sections.
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| 4. |
- Alonso Fernandez, Iñigo, 1985, et al.
(författare)
-
Modeling Technical Risk Propagation Using Field-Effects in Automotive Technology Infusion Design Studies
- 2024
-
Ingår i: Journal of Mechanical Design - Transactions of the ASME. - 1050-0472. ; 146:12
-
Tidskriftsartikel (refereegranskat)abstract
- The integration of novel technologies into existing product architectures poses significant challenges, especially in managing the associated technical risks that affect system functionality and reliability. Traditional methods often struggle with the unpredictability and complexity of field effects due to technological integration. To address these challenges, this study introduces a novel DSM (Design Structure Matrix)-based method that accurately accounts for and mitigates both first-order and higher-order field effects. By employing the inverse-square law, our method quantifies the attenuation of field effects with distance, thereby enhancing the precision of impact assessments across the system architecture. This approach is substantiated through a case study involving the introduction of a steer-by-wire (SbW) system in automotive design. The case study highlights the method’s effectiveness in identifying and managing potential integration points for new technologies, offering a systematic framework for minimizing risk and enhancing system design in automotive engineering. The success of this method in the case study provides practical insights into the design around the impact of field effects, emphasizing its applicability and value in real-world engineering scenarios.
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| 5. |
- Müller, Jakob, 1987, et al.
(författare)
-
Enhanced function-means modeling supporting design space exploration
- 2019
-
Ingår i: Artificial intelligence for engineering design, analysis and manufacturing. - : Cambridge University Press. - 0890-0604 .- 1469-1760. ; 33:4, s. 502-516
-
Tidskriftsartikel (refereegranskat)abstract
- One problem in incremental product development is that geometric models are limited in their ability to explore radical alternative design variants. In this publication, a function modeling approach is suggested to increase the amount and variety of explored alternatives, since function models (FM) provide greater model flexibility. An enhanced function-means (EF-M) model capable of representing the constraints of the design space as well as alternative designs is created through a reverse engineering process. This model is then used as a basis for the development of a new product variant. This work describes the EF-M model's capabilities for representing the design space and integrating novel solutions into the existing product structure and explains how these capabilities support the exploration of alternative design variants. First-order analyses are executed, and the EF-M model is used to capture and represent already existing design information for further analyses. Based on these findings, a design space exploration approach is developed. It positions the FM as a connection between legacy and novel designs and, through this, allows for the exploration of more diverse product concepts. This approach is based on three steps-decomposition, design, and embodiment-A nd builds on the capabilities of EF-M to model alternative solutions for different requirements. While the embodiment step of creating the novel product's geometry is still a topic for future research, the design space exploration concept can be used to enable wider, more methodological, and potentially automated design space exploration.
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| 6. |
- Panarotto, Massimo, 1985-, et al.
(författare)
-
Experimenting the use of value models as boundary objects in conceptual PSS design
- 2016
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Ingår i: PRODUCT-SERVICE SYSTEMS ACROSS LIFE CYCLE. - : Elsevier. ; , s. 370-375
-
Konferensbidrag (refereegranskat)abstract
- The paper presents the results of experimental activities aiming at investigating the role of ‘value models’ as ‘boundary objects’ that facilitate cross-functional discussions in the PSS conceptual design phase. The experiment featured 6 separate sessions involving a total of 22 students in the final year of three different Master Programmes. In the sessions participants were asked to redesign an asphalt compactor and to use different types of design decision support for this task, namely value models vs. requirements checklists. The recordings from the experiment were analysed using protocol analysis to compare the behaviour of teams. The results confirm the hypothesis that, compared to traditional requirement checklists, value models emphasizes activities related to the clarification (1) of the problem domain and needs and (2) of the lifecycle aspects of a solution concept. Both results suggest that value models have the ability to facilitate cross-boundary discussion in the early phases of the PSS design process, and to act as boundary objects that provide a common platform for knowledge sharing within the cross-functional team.
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| 7. |
- Panarotto, Massimo, 1985, et al.
(författare)
-
Local absorption of uncertainty in complex systems using resilient objects
- 2024
-
Ingår i: Journal of Engineering Design. - 1466-1837 .- 0954-4828. ; In Press
-
Tidskriftsartikel (refereegranskat)abstract
- Traditional approaches to managing uncertainties during product development often lead to increased complexity and resource consumption. This paper introduces the concept of ‘resilient objects’ as an alternative solution, designed to provide passive protection against disruptive events of different kinds, thereby reducing the necessity for complex margins at system interfaces. The paper illustrates the concept of resilient objects through practical examples, which demonstrate the objects’ ability to uphold system functionality even when faced with unexpected disruptive events. By embodying resilience locally in areas of the system that are most susceptible to uncertain conditions, resilient objects offer the potential to minimise interface margins and thus the need for excessive system over-design. The concept of resilient objects offers a new perspective on how to solve the trade-offs between resilience and complexity when addressing uncertainties in the dynamic landscape of product development.
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| 8. |
- Panarotto, Massimo, 1985, et al.
(författare)
-
TEXT MINING OF RESILIENT OBJECTS ABSORBING CHANGE AND UNCERTAINTY
- 2023
-
Ingår i: Proceedings of the Design Society. - 2732-527X. ; 3, s. 3325-3334
-
Konferensbidrag (refereegranskat)abstract
- The current ways of coping with uncertainty such as changes during product design or use have been through methods such as easy restructuring (e.g., modularity with buffer in interface definition), by overdesign and so on. The present investments on maintaining products in the economy for “as long as possible” is challenging these strategies from a cost and environmental perspective. Moreover, these strategies often lead to highly overdesigned products. An alternative strategy is to introduce features in a design, called “resilient objects”, which are able to absorb such uncertainties without wasteful overdesign of other parts. By applying a ‘text-mining’ approach on patents, this paper has identified 5,552 candidates for such resilient objects that can be recombined and inserted in regions of the product that are likely to be most affected by current and future uncertainties. The application of resilient objects is demonstrated on a case study (a cooling system for battery electric vehicles). The case study highlights the ability of these objects to 1) significantly increase protection against uncertainties without the need for restructuring, 2 ) reduce the risk for overdesign and 3) dampen effects of change propagation.
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| 9. |
- Al Handawi, Khalil, et al.
(författare)
-
Optimal allocation of design margins in additive remanufacturing
- 2021
-
Ingår i: Proceedings of the ASME Design Engineering Technical Conference. ; 3B-2021
-
Konferensbidrag (refereegranskat)abstract
- Often, coping with changing requirements results in substantial overdesign, because of the ways in which design margins are allocated at the beginning of the design process. In this paper, we present a design optimization method for minimizing overdesign using additive manufacturing. We use recently defined constituents of design margins (buffer and excess) as metrics in a design optimization problem to minimize overdesign. The method can be used to obtain optimal design decisions for changing requirements. We demonstrate our method by means of a turbine rear structure design problem where changes in the temperature loads are met by depositing different types of stiffeners on the outer casing. The optimal decisions obtained by optimization minimize overdesign but ensure that requirements are met throughout the product's lifecycle.
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| 10. |
- Al Handawi, Khalil, et al.
(författare)
-
Optimization of Design Margins Allocation When Making Use of Additive Remanufacturing
- 2022
-
Ingår i: Journal of Mechanical Design - Transactions of the ASME. - : ASME International. - 1050-0472. ; 144:1
-
Tidskriftsartikel (refereegranskat)abstract
- Requirement changes can result in substantial overdesign because of the way design margins are allocated at the beginning of the design process. We present a design optimization method for minimizing overdesign by making use of additive remanufacturing and recently defined constituents of design margins (buffer and excess). The method can be used to obtain a set of design decisions for different changing requirement scenarios. We demonstrate our method by means of a turbine rear structure design problem where changes in the temperature loads are met by depositing different types of stiffeners on the outer casing. The results of the case study are visualized in a tradespace, which allows for comparison between sets of optimal, flexible, and robust designs. Results show that the optimized set of design decisions balances flexibility and robustness in a cost-effective manner.
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| 11. |
- Al Handawi, Khalil, et al.
(författare)
-
Scalable set-based design optimization and remanufacturing for meeting changing requirements
- 2020
-
Ingår i: Proceedings of the ASME Design Engineering Technical Conference. ; 11A-2020
-
Konferensbidrag (refereegranskat)abstract
- Engineering design problems often have open-ended requirements, especially in the early stages of development. Setbased design is a paradigm for exploring, and keeping under consideration, several alternatives so that commitment to a single design can be delayed until requirements are settled. In addition, requirements may change over the lifetime of a component or a system. Novel manufacturing technologies enable designs to be remanufactured to meet changed requirements. By considering this capability during the set-based design optimization process, solutions can be scaled to meet evolving requirements and customer specifications even after commitment. Such an ability can also support a circular economy paradigm based on the return of used or discarded components and systems to working condition. We propose a set-based design methodology to obtain scalable optimal solutions that can satisfy changing requirements through remanufacturing. We first use design optimization and surrogate modeling to obtain parametric optimal designs. This set of parametric optimal designs is then reduced to scalable optimal designs by observing a set of transition rules for the manufacturing process used (additive or subtractive). The methodology is demonstrated by means of a structural aeroengine component that is remanufactured by direct energy deposition of a stiffener to meet higher loading requirements.
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| 12. |
- Al Handawi, Khalil, et al.
(författare)
-
Scalable Set-Based Design Optimization and Remanufacturing for Meeting Changing Requirements
- 2021
-
Ingår i: Journal of Mechanical Design - Transactions of the ASME. - : ASME International. - 1050-0472. ; 143:2
-
Tidskriftsartikel (refereegranskat)abstract
- Design requirements are often uncertain in the early stages of product development. Set-based design is a paradigm for exploring, and keeping under consideration, several alternatives so that commitment to a single design can be delayed until requirements are settled. In addition, requirements may change over the lifetime of a component or a system. Novel manufacturing technologies may enable designs to be remanufactured to meet changed requirements. By considering this capability during the set-based design optimization process, solutions can be scaled to meet evolving requirements and customer specifications even after commitment. Such an ability can also support a circular economy paradigm based on the return of used or discarded components and systems to working condition. We propose a set-based design methodology to obtain scalable optimal solutions that can satisfy changing requirements through remanufacturing. We first use design optimization and surrogate modeling to obtain parametric optimal designs. This set of parametric optimal designs is then reduced to scalable optimal designs by observing a set of transition rules for the manufacturing process used (additive or subtractive). The methodology is demonstrated by means of a structural aeroengine component that is remanufactured by direct energy deposition of a stiffener to meet higher loading requirements.
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| 13. |
- Arjomandi Rad, Mohammad, 1987, et al.
(författare)
-
Datasets in design research: needs and challenges and the role of AI and GPT in filling the gaps
- 2024
-
Ingår i: Proceedings of the Design Society. - 2732-527X. ; 4, s. 1919-1928
-
Konferensbidrag (refereegranskat)abstract
- Despite the recognized importance of datasets in data-driven design approaches, their extensive study remains limited. We review the current landscape of design datasets and highlight the ongoing need for larger and more comprehensive datasets. Three categories of challenges in dataset development are identified. Analyses show critical dataset gaps in design process where future studies can be directed. Synthetic and end-to-end datasets are suggested as two less explored avenues. The recent application of Generative Pretrained Transformers (GPT) shows their potential in addressing these needs.
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| 14. |
- Bonham, Euan, et al.
(författare)
-
Designing and Integrating a Digital Thread System for Customized Additive Manufacturing in Multi-Partner Kayak Production
- 2020
-
Ingår i: Systems. - : MDPI AG. - 2079-8954. ; 8:4
-
Tidskriftsartikel (refereegranskat)abstract
- Additive manufacturing (AM) opens the vision of decentralised and individualised manufacturing, as a tailored product can be manufactured in proximity to the customers with minimal physical infrastructure required. Consequently, the digital infrastructure and systems solution becomes substantially more complex. There is always a need to design the entire digital system so that different partners (or stakeholders) access correct and relevant information and even support design iterations despite the heterogenous digital environments involved. This paper describes how the design and integration of a digital thread for AM can be approached. A system supporting a digital thread for AM kayak production has been designed and integrated in collaboration with a kayak manufacturer and a professional collaborative product lifecycle management (PLM) software and service provider. From the demonstrated system functionality, three key lessons learnt are clarified: (1) The need for developing a process model of the physical and digital flow in the early stages, (2) the separation between the data to be shared and the processing of data to perform each parties' task, and (3) the development of an ad-hoc digital application for the involvement of new stakeholders in the AM digital flow, such as final users. The application of the digital thread system was demonstrated through a test of the overall concept by manufacturing a functional and individually customised kayak, printed remotely using AM (composed of a biocomposite containing 20% wood-based fibre).
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| 15. |
- Borgue, Olivia, 1989, et al.
(författare)
-
Constraint Replacement-Based Design for Additive Manufacturing of Satellite Components: Ensuring Design Manufacturability through Tailored Test Artefacts
- 2019
-
Ingår i: Aerospace. - : MDPI AG. - 2226-4310. ; 6:11
-
Tidskriftsartikel (refereegranskat)abstract
- Additive manufacturing (AM) is becoming increasingly attractive for aerospace companies due to the fact of its increased ability to allow design freedom and reduce weight. Despite these benefits, AM comes with manufacturing constraints that limit design freedom and reduce the possibility of achieving advanced geometries that can be produced in a cost-efficient manner. To exploit the design freedom offered by AM while ensuring product manufacturability, a model-based design for an additive manufacturing (DfAM) method is presented. The method is based on the premise that lessons learned from testing and prototyping activities can be systematically captured and organized to support early design activities. To enable this outcome, the DfAM method extends a representation often used in early design, a function-means model, with the introduction of a new model construct-manufacturing constraints (Cm). The method was applied to the redesign, manufacturing, and testing of a flow connector for satellite applications. The results of this application-as well as the reflections of industrial practitioners-point to the benefits of the DfAM method in establishing a systematic, cost-efficient way of challenging the general AM design guidelines found in the literature and a means to redefine and update manufacturing constraints for specific design problems.
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| 16. |
- Borgue, Olivia, 1989, et al.
(författare)
-
Design for test and qualification through activity-based modelling in product architecture design
- 2021
-
Ingår i: Journal of Engineering Design. - : Informa UK Limited. - 1466-1837 .- 0954-4828. ; 32:11, s. 646-670
-
Tidskriftsartikel (refereegranskat)abstract
- Test and qualification (T&Q) phases take a significant portion of the time to market for critical products in the space industry, especially when introducing new technologies. Since T&Q are treated as standard procedures, they tend to be independent of the architectural design phases and kept away from design decisions. However, when introducing new technologies, qualification procedures may differ from those established in regular design scenarios, and the estimation of qualification costs and duration is problematic. There is a lack of design for qualification methods capable of modelling these activities in early phases and use those models to support the architecture design of products with affordable test and qualification phases. In this article, a computer-assisted, model-based design method to model T&Q activities concerning early product architecture designs is proposed. Product architecture alternatives, test schedules and cost are connected through the quantification of T&Q drivers and driver rates. The design method is demonstrated using a case study about electric propulsion for satellites. The method is applicable for design situations where the choice of technology has a strong dependence on the qualification procedure.
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| 17. |
- Borgue, Olivia, 1989, et al.
(författare)
-
Function modelling and constraints replacement for additive manufacturing in satellite component design
- 2018
-
Ingår i: Proceedings of NordDesign: Design in the Era of Digitalization, NordDesign 2018.
-
Konferensbidrag (refereegranskat)abstract
- Additive Manufacturing is increasingly attracting interest among manufacturers of space components, mainly due to its high design freedom, capability for achieving weight reduction and for being cost-efficiently produced in low volumes. However, AM is a less mature technology compared to established manufacturing methods. This lack of maturity concerns especially the area of AM manufacturing constraints as the knowledge about them is limited and because they mature over time, as the technology evolves. The lack of knowledge hinders designers to fully take advantage of AM, fearing that the technology will affect product reliability. This situation is particularly emphasized in space components, since they are subject to high reliability requirements. In this paper, a methodology based on function decomposition and constraint modelling is proposed as a basis for re-design of products using AM. In the methodology, the original functions, design solutions and manufacturing constraints of a product are identified. Then, the original manufacturing constraints are removed and replaced with manufacturing constraints for AM. Afterwards, functions and design solutions on the function model are modified and a new part geometry is designed and eventually realised in CAD. This methodology has been applied on a case study featuring a satellite sub-component.
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| 18. |
- Borgue, Olivia, 1989, et al.
(författare)
-
Function modelling and constraints replacement to support design for additive manufacturing of satellite components
- 2018
-
Ingår i: Proceedings of NordDesign: Design in the Era of Digitalization, NordDesign 2018.
-
Konferensbidrag (refereegranskat)abstract
- © Proceedings of NordDesign: Design in the Era of Digitalization, NordDesign 2018. All rights reserved. Additive Manufacturing is increasingly attracting interest among manufacturers of space components, mainly due to its high design freedom, capability for achieving weight reduction and for being cost-efficiently produced in low volumes. However, AM is a less mature technology compared to established manufacturing methods. This lack of maturity concerns especially the area of AM manufacturing constraints as the knowledge about them is limited and because they mature over time, as the technology evolves. The lack of knowledge hinders designers to fully take advantage of AM, fearing that the technology will affect product reliability. This situation is particularly emphasized in space components, since they are subject to high reliability requirements. In this paper, a methodology based on function decomposition and constraint modelling is proposed as a basis for re-design of products using AM. In the methodology, the original functions, design solutions and manufacturing constraints of a product are identified. Then, the original manufacturing constraints are removed and replaced with manufacturing constraints for AM. Afterwards, functions and design solutions on the function model are modified and a new part geometry is designed and eventually realised in CAD. This methodology has been applied on a case study featuring a satellite sub-component.
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| 19. |
- Borgue, Olivia, 1989, et al.
(författare)
-
Fuzzy model-based design for testing and qualification of additive manufacturing components
- 2022
-
Ingår i: Design Science. - : Cambridge University Press (CUP). - 2053-4701. ; 8
-
Tidskriftsartikel (refereegranskat)abstract
- The uncertainties and variation of additive manufacturing (AM) material properties and their impact on product quality trouble designers. The lack of experience in AM technologies renders the experts' assessment of AM components and the establishment of safety margins difficult. Consequently, unexpected qualification difficulties resulting in expensive and lengthy redesign processes might arise. To reduce the risk of qualification failure, engineers might perform copious time-consuming and expensive specimen testing in early phases, or establish overconservative design margins, overriding the weight reduction benefits of AM technologies. In this article, a model-based design method is proposed for the conceptual design of AM space components with affordable test phases. The method utilizes fuzzy logics to systematically account for experts' assessment of AM properties variation, and to provide an early estimation of a product qualification likelihood related to design parameters of interest, without the need for copious testing. The estimation of qualification likelihood can also point out which are the unique AM material uncertainties that require further specific testing, to enable the design of a product with a better performance and more affordable test phases. The method is demonstrated with the design for AM gridded of ion thrusters for satellite applications.
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| 20. |
- Borgue, Olivia, 1989, et al.
(författare)
-
Impact on design when introducing additive manufacturing in space applications
- 2018
-
Ingår i: Proceedings of International Design Conference, DESIGN. - : Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Croatia; The Design Society, Glasgow, UK. - 1847-9073. - 9789537738594 ; 3, s. 997-1008
-
Konferensbidrag (refereegranskat)abstract
- This paper studied how the introduction of additive manufacturing (AM) in space applications impacts the design phases. Together with three manufacturers of space applications, the potential benefit as well as constraints are studied to identify design gaps. A literature survey is conducted to match the needs and following an analysis the impact on design practice is formulated. Results show the need to combine a wider design exploration capability, in combination with comparative modelling strategies.
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| 21. |
- Borgue, Olivia, 1989, et al.
(författare)
-
Modular product design for additive manufacturing of satellite components: maximising product value using genetic algorithms
- 2019
-
Ingår i: Concurrent Engineering Research and Applications. - 1063-293X .- 1531-2003. ; 27:4, s. 331-346
-
Tidskriftsartikel (refereegranskat)abstract
- For space manufacturers, additive manufacturing promises to dramatically reduce weight and costs by means of integral designs achieved through part consolidation. However, integrated designs hinder the ability to change and service components over time - actually increasing costs - which is instead enabled by highly modular designs. Finding the optimal trade-off between integral and modular designs in additive manufacturing is of critical importance. In this article, a product modularisation methodology is proposed for supporting such trade-offs. The methodology is based on combining function modelling with optimisation algorithms. It evaluates product design concepts with respect to product adaptability, component interface costs, manufacturing costs and cost of post-processing activities. The developed product modularisation methodology is derived from data collected through a series of workshops with industrial practitioners from three different manufacturer companies of space products. The implementation of the methodology is demonstrated in a case study featuring the redesign of a satellite antenna.
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| 22. |
- Borgue, Olivia, 1989, et al.
(författare)
-
Supporting Additive Manufacturing Technology Development through Constraint Modelling in Early Conceptual Design: A Satellite Propulsion Case Study
- 2020
-
Ingår i: Proceedings of the Design Society: DESIGN Conference. - : Cambridge University Press (CUP). - 2633-7762. ; 1, s. 817-826
-
Konferensbidrag (refereegranskat)abstract
- Function and constraints modelling are implemented to design two gridded ion thrusters for additive manufacturing (AM). One concept takes advantage of AM design freedom, disregarding AM limitations and is not feasible. The other concept considers AM limitations and is manufacturable and feasible. Constraints modelling highlights AM capabilities that can be improved, showing where future investment is needed. Constraints representation can also support the creation of technology development roadmaps able to identify areas of AM technologies that must be improved.
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| 23. |
- Brahma, Arindam, 1987, et al.
(författare)
-
FUNCTION DRIVEN ASSESSMENT OF MANUFACTURING RISKS IN CONCEPT GENERATION STAGES
- 2023
-
Ingår i: Proceedings of the Design Society. - 2732-527X. ; 3, s. 1995-2004
-
Konferensbidrag (refereegranskat)abstract
- Decisions made in the concept generation phase have a significant effect on the product. While product- related risks typically can be considered in the early stages of design, risks such as supply chain and manufacturing methods are rarely easy to account for in early phases. This is because the currently available methods require mature data, which may not be available during concept generation. In this paper, we propose an approach to address this. First, the product and the non-product (manufacturing and/or supply chain) attributes are modelled using the enhanced function means (EF-M) modelling method. The EF-M method provides the opportunity to model alternative solutions-set for functions. Dependencies are then mapped within the product and the manufacturing models, and also in between them. An automatic combinatorial method of concept generation is employed where each generated instance is a design concept-manufacturing method pair. A risk propagation algorithm is then used to assess the risks of all the generated alternatives.
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| 24. |
- Castro, Sabela Gonzalez, et al.
(författare)
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Analysing increase of functionality and complexity in integrated product architectures
- 2020
-
Ingår i: Proceedings of the NordDesign 2020 Conference, NordDesign 2020.
-
Konferensbidrag (refereegranskat)abstract
- Nowadays, product designers find difficulties and uncertainties when assessing how complex a product will be when introducing new functionalities and technologies or when integrating multiple functionalities into a single component. There is a limited number of studies correlating functionality increase to product complexity. In this paper, the impact of functionality on complexity is quantitatively analyzed in two different case studies: one regarding a set of valves to study how complexity is affected when adding new functionalities, and another one related to three alternative designs of computer mice that features different degrees of functional integration. In the first case study, it has been found that adding new functionalities leads to a super-linear increase of complexity. In the second case study, it has been found that integrating functionality through the introduction of new electronic elements allows to reduce the total number of components, suggesting a decrease in complexity. However, the case study shows an increase in the product's overall complexity through an increased number of interactions between the components themselves. This means that possessing a quantitative methodology to evaluate the impact of functionality increase in product complexity can be an important means for designers to avoid misconceptions and risks during the early phases of product development.
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| 25. |
- Dordlofva, Christo, et al.
(författare)
-
Drivers and Guidelines in Design for Qualification Using Additive Manufacturing in Space Applications
- 2019
-
Ingår i: Proceedings of the International Conference on Engineering Design, ICED. - : Cambridge University Press (CUP). - 2220-4334 .- 2220-4342. ; 1:1, s. 729-738, s. 729-738
-
Konferensbidrag (refereegranskat)abstract
- In recent years, reducing cost and lead time in product development and qualification has become decisive to stay competitive in the space industry. Introducing Additive Manufacturing (AM) could potentially be beneficial from this perspective, but high demands on product reliability and lack of knowledge about AM processes make implementation challenging. Traditional approaches to qualification are too expensive if AM is to be used for critical applications in the near future. One alternative approach is to consider qualification as a design factor in the early phases of product development, potentially reducing cost and lead time for development and qualification as products are designed to be qualified. The presented study has identified factors that drive qualification activities in the space industry and these “qualification drivers” serve as a baseline for a set of proposed strategies for developing “Design for Qualification” guidelines for AM components. The explicit aim of these guidelines is to develop products that can be qualified, as well as appropriate qualification logics. The presented results provide a knowledge-base for the future development of such guidelines.
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| 26. |
- Eckert, Claudia, 1965, et al.
(författare)
-
Industry Trends to 2040
- 2019
-
Ingår i: Proceedings of the 22nd International Conference on Engineering Design (ICED19). - : Cambridge University Press. ; 2019-August, s. 2121-2128
-
Konferensbidrag (refereegranskat)abstract
- The engineering design community needs to development tools and methods now to support emergingtechnological and societal trends. While many forecasts exist for technological and societal changes,this paper reports on the findings of a workshop, which addressed trends in engineering design to 2040.The paper summarises the key findings from the six themes of the workshop: societal trends, ways ofworking, lifelong learning, technology, modelling and simulation and digitisation; and points to thechallenge of understanding how these trends affect each other.
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| 27. |
- Gericke, Kilian, et al.
(författare)
-
Supporting designers : moving from method menagerie to method ecosystem
- 2020
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Ingår i: Design Science. - : Cambridge University Press. - 2053-4701. ; 6
-
Tidskriftsartikel (refereegranskat)abstract
- Supporting designers is one of the main motivations for design research. However, there is an ongoing debate about the ability of design research to transfer its results, which are often provided in form of design methods, into practice. This article takes the position that the transfer of design methods alone is not an appropriate indicator for assessing the impact of design research by discussing alternative pathways for impacting design practice. Impact is created by different means - first of all through the students that are trained based on the research results including design methods and tools and by the systematic way of thinking they acquired that comes along with being involved with research in this area. Despite having a considerable impact on practice, this article takes the position that the transfer of methods can be improved by moving from cultivating method menageries to facilitating the evolution of method ecosystems. It explains what is understood by a method ecosystem and discusses implications for developing future design methods and for improving existing methods. This paper takes the position that efforts on improving and maturing existing design methods should be raised to satisfy the needs of designers and to truly support them.
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| 28. |
- Hajali, Tina, 1996, et al.
(författare)
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INFORMATION FLOW ANALYSIS ENABLING THE INTRODUCTION OF ADDITIVE MANUFACTURING FOR PRODUCTION TOOLS-INSIGHTS FROM AN INDUSTRIAL CASE
- 2023
-
Ingår i: Proceedings of the Design Society, vol. 3. - : Cambridge University Press. ; 3, s. 2315-2324
-
Konferensbidrag (refereegranskat)abstract
- Additive Manufacturing (AM) has traditionally been used for prototyping of products, however, in the last few decades, it has seen a rising growth in the manufacture of final products. The addition of AM as a manufacturing method in the portfolio of a company's production capabilities increases the complexity of decision-making. This is because the decisions are often not based on the same criteria and constraints, as related to conventional manufacturing processes. In this paper, we investigate this challenge by studying how AM affects the current workflow and the associated information flow for a design-make process in a Swedish manufacturer before and after the integration of AM. In this paper, it is argued that apart from an understanding of how to design for AM, it is equally important to consider how introducing AM alters the existing information flow and how to benefit from information available in various design-make process steps to facilitate decision making process. The result clarifies that the current process relies largely on tacit and experiences-based knowledge, whereas to take advantage of AM, more precision is required to capture and process the available information.
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| 29. |
- Isaksson, Ola, 1969, et al.
(författare)
-
Multi-domain design assessment for aerospace components including weld accessibility
- 2021
-
Ingår i: Proceedings of the Design Society. - : Cambridge University Press (CUP). - 2732-527X. ; Volume 1 - August 2021, s. 2217-2225
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Konferensbidrag (refereegranskat)abstract
- Aeroengine manufacturers need to better include assessment of risk and cost for realising the novel products needed to meet the ambitions sustainability driven targets for air transport. Radical technologies are needed that simultaneously require critical manufacturing processes to be assessed already in conceptual design. In this paper, a multi-domain framework for conceptual design and evaluation is proposed that provide the ability to interactively explore the concepts that simultaneously allow a wider range of architectures can be assessed and still include weldability of the concepts. It has been demonstrated how high level, and function driven conceptual design alternatives can be modelled and evaluated to analyse risk and resilience of architectures. Geometrical concepts generated for the most interesting regimes using design of experiments covering a desired design space. For each CAD-model the welding process can be simulated to assess feasibility and lead time for welding, and return quantified results to be included in an integrated results data set for interactive decision making. The paper is the first report from a research project that improve concurrent design of product and production concepts.
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| 30. |
- Isaksson, Ola, 1969, et al.
(författare)
-
Perspectives on innovation: The role of engineering design
- 2019
-
Ingår i: Proceedings of the International Conference on Engineering Design, ICED. - : Cambridge University Press (CUP). - 2220-4334 .- 2220-4342. ; 2019-August, s. 1235-1244
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Konferensbidrag (refereegranskat)abstract
- The aim of the paper is to foster a discussion in the engineering design community about its understanding of the innovation phenomena and the unique contribution that comes from engineering design. The paper reports on the dialouge originating from a series of workshops with participants from different backgrounds in engineering design, systems engineering, industrial design psychology and business. Definitions of innovation are revisited as used in business, management and engineering design contexts. The role of innovation is then discussed related to product development from (i) the management perspective, (ii) a systems architecture perspective and (iii) in relation to sustainable development as one driver of innovation. It is argued that engineering design has a central role in how to realise the novelty aspect of innovation and often plays a critical role in maturing these into the valuable products, and there is a need to articulate the role of engineering design in innovation to better resonate with the business and management research.
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| 31. |
- Isaksson, Ola, 1969, et al.
(författare)
-
YOU NEED TO FOCUS TO VALIDATE
- 2020
-
Ingår i: Proceedings of the Design Society: DESIGN Conference. - : Cambridge University Press (CUP). - 2633-7762. ; 1, s. 31-40
-
Konferensbidrag (refereegranskat)abstract
- Many research students find challenges when validating their research. Especially when they have expectations to contribute to both practice and the research body of knowledge. This paper argues that a key to successful validation of design research lies in the ability to focus on what to validate in advance of how to validate. The paper provide a set of guidelines to support a discussion on how to converge to a claim that actually can be validated. The paper reports on experiences from PhD level course on validation in design research.
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| 32. |
- Johansson, Christian, 1980-, et al.
(författare)
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Maturity of models in a multi-model decision support system
- 2017
-
Ingår i: Proceedings of the International Conference on Engineering Design, ICED. - : The Design Society. - 2220-4334 .- 2220-4342. ; 6:DS87-6, s. 237-246, s. 237-246
-
Konferensbidrag (refereegranskat)abstract
- To reduce uncertainty in decisions, engineers experiment with models, such as, exploring what-if scenarios, and thus increase knowledge. Still, because modelling is an idealisation of reality, there is often substantial uncertainty involved, and this decision makers less confident to lean onto models alone when making decisions. The aim of this paper is to conceptualize a design support for improving confidence and validity in models, by communicating uncertainties from modelling and simulation to relevant stakeholders. The paper reports on empirical data from a research profile workshop. The findings illustrate the importance of communicating uncertainties from models between relevant stakeholders in order to drive action. The paper then presents an approach to visualize model maturity levels as well as impact levels in relation to one or several aggregated models. With this approach, focus can move to discuss the knowledge about the knowledge that is created from modelling, and to facilitate discussions on a meta-level about the modelling and simulation. This is exemplified by a test scenario where a multi-disciplinary modelling and simulation of an asphalt roller is presented.
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| 33. |
- Landahl, Jonas, 1986, et al.
(författare)
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Towards Adopting Digital Twins to Support Design Reuse during Platform Concept Development
- 2018
-
Ingår i: Proceedings of NordDesign: Design in the Era of Digitalization, NordDesign 2018.
-
Konferensbidrag (refereegranskat)abstract
- To gain a first-mover advantage on the marketplace, manufacturers are striving to develop innovative products that meet the needs of a wide range of customers. Traditionally to support innovative design, the fuzzy concept stage has long been supported by heuristic design philosophies. In recent years, new supportive technologies have enabled concept generation based on the collection and reuse of existing data. Existing data can be collected from various sources; for example, customer reviews, historical data, or by studying existing products or other industrial assets such as production machines and tooling. Lately, the concept of Digital Twin (DT) has gained a wealth of attention as a means to construct a high-fidelity digital copy of a physical asset and to study its shape, position, gesture, status and motion. The common aim of the DT is to support the realistic model of system behavior that can support performance prediction and optimization. However, in providing sufficient support during the conceptual stages the realistic models become heavy and costly to adapt. While the emerging data-driven design approaches can be used to generate designs with alterations, there is a lack of support to generate and evaluate solutions during the conceptual stages. In this paper, a framework of a Digital Platform Twin (DPT) is proposed to fill this gap. In contrast to a sole high-fidelity digital representation, the DPT builds on abstracting multiple high-fidelity Digital Twins into a low- fidelity platform model, represented as a function model. The DPT framework proclaims the vision of supporting design engineers in the process of abstracting functionalities of existing assets, inserting new functionalities and technologies in the function structure to ultimately support the generation and evaluation of new functional concepts. To demonstrate the DPT framework, an automotive example is presented. We believe that reuse during platform concept development can be supported with the use of multiple DTs. To achieve this, a challenge is to practically realize the transcending in abstraction levels of the models: from Digital Twins to function model and from function model to geometry models. The transcending in abstraction levels is therefore a matter of future work.
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| 34. |
- Lawand, Lydia, et al.
(författare)
-
A lifecycle cost-driven system dynamics approach for considering additive re-manufacturing or repair in aero-engine component design
- 2019
-
Ingår i: Proceedings of the International Conference on Engineering Design, ICED. - : Cambridge University Press (CUP). - 2220-4334 .- 2220-4342. ; 2019-August, s. 1343-1352
-
Konferensbidrag (refereegranskat)abstract
- Aero-engine component design decisions should consider re-manufacturing and/or repair strategies and their impact on lifecycle cost. Existing design approaches do not account for alternative production technologies such as the use of additive manufacturing in life extension processes. This paper presents a modeling and optimization methodology for examining the impact of design decisions in the early development stage on component lifecycle cost during the in-service phase while considering the potential use of additive manufacturing in life extension strategies. Specifically, a system dynamics model is developed to assess different end-of-life scenarios. Finally, an optimization problem is formulated and solved to minimize lifecycle cost with respect to design variables related to remanufacturing.
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| 35. |
- Lawand, Lydia, et al.
(författare)
-
Dynamic lifecycle cost modeling for adaptable design optimization of additively remanufactured aeroengine components
- 2020
-
Ingår i: Aerospace. - : MDPI AG. - 2226-4310. ; 7:8
-
Tidskriftsartikel (refereegranskat)abstract
- Additive manufacturing (AM) is being used increasingly for repair and remanufacturing of aeroengine components. This enables the consideration of a design margin approach to satisfy changing requirements, in which component lifespan can be optimized for different lifecycle scenarios. This paradigm requires lifecycle cost (LCC) modeling; however, the LCC models available in the literature consider mostly the manufacturing of a component, not its repair or remanufacturing. There is thus a need for an LCC model that can consider AM for repair/remanufacturing to quantify corresponding costs and benefits. This paper presents a dynamic LCC model that estimates cumulative costs over the in-service phase and a nested design optimization problem formulation that determines the optimal component lifespan range to minimize overall cost while maximizing performance. The developed methodology is demonstrated by means of an aeroengine turbine rear structure.
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| 36. |
- Lithgow, Drew, et al.
(författare)
-
DESIGN AUTOMATION FOR CUSTOMISED AND LARGE-SCALE ADDITIVE MANUFACTURING: A CASE STUDY ON CUSTOM KAYAKS
- 2019
-
Ingår i: Proceedings of the International Conference on Engineering Design, ICED. - : Cambridge University Press (CUP). - 2220-4334 .- 2220-4342. ; 2019-August
-
Konferensbidrag (refereegranskat)abstract
- Additive Manufacturing (AM) offers the potential to increase the ability to customise large-scale plastic components. However, a substantial amount of manual work is still required during the customisation process, both in design and manufacturing. This paper looks into how the additive manufacturing of mass customised large-scale products can be supported. Data was collected through interaction with industrial partners and potential customers in a case study regarding the customisation of kayaks. As a result, the paper proposes a model-based methodology which combines design automation with a user interface. The results point to the benefit of the proposed methodology in terms of design efficiency, as well as in terms of displaying results to the end user in an understandable format.
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| 37. |
- Mallalieu, Adam, 1995, et al.
(författare)
-
The Role of Digital Infrastructure for the Industrialisation of Design for Additive Manufacturing
- 2022
-
Ingår i: Proceedings of the Design Society. - : Cambridge University Press (CUP). - 2732-527X. ; 2, s. 1401-1410
-
Konferensbidrag (refereegranskat)abstract
- The use of Additive Manufacturing (AM) can bring opportunities for industry, but several challenges need to be addressed, specifically the digital infrastructure comprising the AM value chain. A combination of a systematic literature review and an industrial use case study concludes that there is low consideration of the digital infrastructure in Design for Additive Manufacturing (DfAM) methods and tools which has a negative impact on the industrialisation of AM. It is therefore recommended that further studies are to be made on how to manage the digital infrastructure in DfAM processes.
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| 38. |
- Martinsson Bonde, Julian, 1992, et al.
(författare)
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A similarity-assisted multi-fidelity approach to conceptual design space exploration
- 2023
-
Ingår i: Computers in Industry. - 0166-3615. ; 151
-
Tidskriftsartikel (refereegranskat)abstract
- In conceptual design studies engineers typically utilize data-based surrogate models to enable rapid evaluation of design objectives that otherwise would be too computationally expensive and time-consuming to simulate. Due to the computationally expensive simulations, the data-based surrogate models are often trained using small sample sizes, resulting in low-fidelity models which can produce results that are not trustworthy. To mitigate this issue, a similarity-assisted design space exploration method is proposed. The similarity is measured between design points that have been evaluated through lower-fidelity data-based surrogate models and design points that have been evaluated using higher-fidelity physics-based simulations. This similarity information can then be used by design engineers to better understand the trustworthiness of the data produced by the low-fidelity surrogate models. Our numerical experiments demonstrate that such a similarity measurement can be used as an indicator of the trustworthiness of the lower-fidelity model predictions. Moreover, a second similarity metric is proposed for measuring the similarity of new designs to legacy designs, thus highlighting the potential to reuse knowledge, analysis models, and data. The proposed method is demonstrated by means of an aero-engine structural component conceptual design study. An open-source software tool developed to assist in data visualization is also presented.
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| 39. |
|
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| 40. |
- Martinsson Bonde, Julian, 1992, et al.
(författare)
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Exploring the Potential of Digital Twin-Driven Design of Aero-Engine Structures
- 2021
-
Ingår i: Proceedings of the Design Society. - : Cambridge University Press (CUP). - 2732-527X. ; 1, s. 1521-1528
-
Konferensbidrag (refereegranskat)abstract
- As the diversity of customer needs increases within the aerospace industry, so does the need for improved design practices to reduce quality issues downstream. When designing new products, design engineers struggle with applying tolerances to features, which often leads to expensive late design iterations. To mitigate this, one aerospace company is looking to reuse tolerance deviation data yielded during manufacturing in design. In the long term these data could provide the basis for a Digital Twin that can be used for improved product development. This article explores how data from production are used today, what issues prevents such data from being exploited in the design phase, and how they potentially could be used for design purposes in the future. To understand the current situation and identify the untapped potential of production data in design, an interview study was conducted in conjunction with a literature review. In this paper the current situation and primary barriers are presented and a possible path for further research and development is suggested.
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| 41. |
- Martinsson Bonde, Julian, 1992, et al.
(författare)
-
Morpheus: The Development and Evaluation of a Software Tool for Morphological Matrices
- 2022
-
Ingår i: Proceedings of NordDesign 2022: How Product and Manufacturing Design Enable Sustainable Companies and Societies.
-
Konferensbidrag (refereegranskat)abstract
- The Morphological Matrix is a well-known and established method for synthesising concepts in engineering design. With the aim to improve its applicability, the method has been implemented into a software tool, which then has been introduced in engineering courses at Chalmers University of Technology. In this paper, the tool and its most important functions are presented and discussed, along with experiences from its use in design projects. It was demonstrated that the tool can ease the process of creating and modifying morphological matrices. Furthermore, the tool demonstrated the ability to generate and keep track of large quantities of solutions, which has previously been difficult as morphological matrices are typically hand drawn or created using an Excel sheet. However, less desired effects were encountered as the tool was perceived by some students as more of a screening and down-selection method, rather than as a tool for synthesising concepts. The learnings and the way forward in education and the industrial context are discussed.
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| 42. |
- Martinsson, Julian, 1992, et al.
(författare)
-
Automatic geometry alteration when designing for metal additive manufacturing
- 2020
-
Ingår i: Proceedings of the NordDesign 2020 Conference, NordDesign 2020.
-
Konferensbidrag (refereegranskat)abstract
- During the last decades, the aerospace industry has been interested in converting some of its production from traditional manufacturing to metal additive manufacturing. This technology is attractive to the aerospace industry due to the low production volumes and the need to minimize product mass that characterize the industry. The transition from traditional to additive manufacturing technologies requires designers to take heed of a new set of design and manufacturing constraints. A well-known limitation for the implementation of additive manufacturing is the need for support structures which increase material consumption and post processing time. The research presented in this paper suggests a novel algorithm for automatically altering the geometry of the product to reduce the need for support structures. The algorithm operates directly on the vertices of the 3D mesh by relocating them to mitigate overhang issues. A proof of concept in the form of a software prototype was developed using the Python programming language to demonstrate the algorithm, and how it can be applied to 3D models. The prototype software utilizes a 3D STL-file as input, and it outputs an altered file of the same format. In the process of developing the software prototype some issues surfaced, the most prominent of which was the inability of the algorithm to handle overhangs parallel to the substrate of the powder bed printer. Such overhangs are also referred to as 0°-overhangs due to their normal vector being parallel to the z-Axis, thus resulting in an overhang of 0°. Aside from that the algorithm also struggled with models of high complexity, which in some cases resulted in invalid or malformed STL geometries. The research conducted for this paper indicates that further research and development is required. Future research concerning automatic geometry alteration should focus on how to deal with the 0°-overhangs. It should also involve investigating the possibility to alter the geometry of CAD-models instead of STL-files, as CAD-models can contain more information, such as constraints. Information of that nature could enable the algorithm to take customer requirements into consideration as it alters the geometry, thus improving its ability to maintain product functionality.
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| 43. |
- Massimo, Panarotto, 1985-, et al.
(författare)
-
Simulation-driven design for assessing strategic decisions in the conceptual design of circular PSS business models
- 2017
-
Ingår i: Procedia CIRP. - : Elsevier. ; , s. 25-30
-
Konferensbidrag (refereegranskat)abstract
- Due to ever increasing challenges faced by our global society, circular design and the idea of product-service systems (PSS) isgaining traction within businesses. However, ‘predicting’ the value of a future PSS solution in the early design phases is difficult,since it requires the ability to balance long term potential with short term decisions. Modelling and simulation is believed to beable to support this challenging task. A simulation framework for circular design of PSS is presented. The simulation processenables the comparison between functional and non-functional performances and their life cycle contributions depending on adefined PSS-like business model strategy. Such integrated simulation framework is intended to exploit engineering modelsoutside their specific discipline, enabling cross-functional collaboration and help decision makers understand how a design cancontribute in satisfying customer and stakeholders needs during the lifecycle of a PSS.
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| 44. |
- Müller, Jakob, 1987, et al.
(författare)
-
Connecting functional and geometrical representations to support the evaluation of design alternatives for aerospace components
- 2019
-
Ingår i: Proceedings of the International Conference on Engineering Design, ICED. - : Cambridge University Press (CUP). - 2220-4334 .- 2220-4342. ; 2019-August, s. 1423-1432
-
Konferensbidrag (refereegranskat)abstract
- Novel product concepts are often down-selected in favour of the incremental development of available designs. This can be attributed to the fact that for the development of a new product, simulations and analysis based on high-fidelity CAD models are required, which are expensive to create. To solve this problem, the use of a function model (FM) as intermediate step between ideation and embodiment is suggested. The approach has been examined in a case study with an aerospace company for the development of a turbine rear assembly, using multiple workshops and interviews with practitioners from the company. A multitude of novel solutions, even extending the functionality of the legacy design, were captured. The FM approach proved to support the representation, analysis, and configuration of 102 different concepts. Although supported by the FM model, the embodiment still showed to be a bottle neck for further development. The subsequent interviews with practitioners showed that the benefits of the approach were seen, but experienced as too complex. Further work will concern a more systematic connection between the FM and CAD model, in order to automate of the embodiment process.
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| 45. |
- Müller, Jakob, 1987, et al.
(författare)
-
Design space exploration of a jet engine component using a combined object model for function and geometry
- 2020
-
Ingår i: Aerospace. - : MDPI AG. - 2226-4310. ; 7:12, s. 1-18
-
Tidskriftsartikel (refereegranskat)abstract
- The design of aircraft and engine components hinges on the use of computer aided design (CAD) models and the subsequent geometry-based analyses for evaluation of the quality of a concept. However, the generation (and variation) of CAD models to include radical or novel design solutions is a resource intense modelling effort. While approaches to automate the generation and variation of CAD models exist, they neglect the capture and representation of the product’s design rationale—what the product is supposed to do. The design space exploration approach Function and Geometry Exploration (FGE) aims to support the exploration of more functionally and geometrically different product concepts under consideration of not only geometrical, but also teleological aspects. The FGE approach has been presented and verified in a previous presentation. However, in order to contribute to engineering design practice, a design method needs to be validated through application in industrial practice. Hence, this publication reports from a study where the FGE approach has been applied by a design team of a Swedish aerospace manufacturers in a conceptual product development project. Conceptually different alternatives were identified in order to meet the expected functionality of a guide vane (GV). The FGE was introduced and applied in a series of workshops. Data was collected through participatory observation in the design teams by the researchers, as well as interviews and questionnaires. The results reveal the potential of the FGE approach as a design support to: (1) Represent and capture the design rationale and the design space; (2) capture, integrate and model novel solutions; and (3) provide support for the embodiment of novel concepts that would otherwise remain unexplored. In conclusion, the FGE method supports designers to articulate and link the design rationale, including functional requirements and alternative solutions, to geometrical features of the product concepts. The method supports the exploration of alternative solutions as well as functions. However, scalability and robustness of the generated CAD models remain subject to further research.
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| 46. |
- Müller, Jakob, 1987, et al.
(författare)
-
Function model-based generation of CAD model variants
- 2021
-
Ingår i: Computer-Aided Design and Applications. - : CAD Solutions, LLC. - 1686-4360. ; 18:5, s. 970-989
-
Tidskriftsartikel (refereegranskat)abstract
- A product is an artefact which fulfils a specific function. However, most design automation (DA) approaches wich are used to generate multiple alternative design concepts focus on the generation of CAD models. These neglect to represent the functional aspects of the product, and are furthermore deemed too rigid for the introductino of novel solutions. Pure function modellingappraoches on the other hand provides methods such as design rationale representation, introduction of novel solutions or instantiation of combinatorial alternative concepts, but the resulting models are insufficient for analysis. To alleviate this, a design space exploration (DSE) approach which couples function modelling and CAD is presented. The approachlinks the product’s design rationale modelled in enhanced functionmeans (EF-M) to a DA approach via the here introduced object model for function and geometry (OMFG). The resulting method is able to automatically generate CAD models of alternative concepts based on combinations of alternative design solutions defined in the function model. The approach is presented through a case study of an aircraft engine component. Sixteen different concepts are generated based on four functions with alternative solutions. In an initial computation of the effort to generate all alternative concepts, the DA aspect of the approach’s effort pays off as soon as five functions have two or more alternative solutions. Beyond the benefit of efficient instantiation of CAD models of alternative product concepts, the approach promises to provide the design rationale behind each concept, and thereby a more systematic way of exploring and evaluating alternative design concepts.
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| 47. |
- Müller, Jakob, 1987, et al.
(författare)
-
Lifecycle design and management of additive manufacturing technologies
- 2018
-
Ingår i: Procedia Manufacturing. - : Elsevier BV. - 2351-9789. ; 19, s. 135-142
-
Tidskriftsartikel (refereegranskat)abstract
- Additive manufacturing (AM) is being proposed as a revolutionary manufacturing technology, promising significant advantages both from a design and production perspective. One challenge is the disruptive nature of AM and its impact on all life cycle phases. This paper reports from a demonstrator project highlighting digitalization and process implications. A demonstrator tool was developed able to collectively capture and visualize different life cycle implications of AM products. Market expectations, technology characteristics and life cycle constraints were met in the demonstrator tool. Each individual part collected its own traceable data set, from design over manufacturing up to postproduction services. Key aspects demonstrated were 1) the need to represent any manufacturing and life cycle constraint already in design, 2) the need to integrate unique identifiers that build a digital twin and 3) the need to automate links between life cycle engineering steps.
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| 48. |
- Müller, Jakob, 1987, et al.
(författare)
-
Mapping the design space in function and geometry models supporting redesign for additive manufacturing
- 2020
-
Ingår i: Journal of Design Research. - 1569-1551 .- 1748-3050. ; 18:1-2, s. 37-56
-
Tidskriftsartikel (refereegranskat)abstract
- The advent of additive manufacturing (AM) brings many benefits in terms of lightweight design. However, there is no established design for additive manufacturing (DfAM) method available, nor are all the impacts and constraints on the product and development process known. Therefore, a method to redesign existing products for AM is proposed. It consists of functional decomposition enhanced by constraints identification, and analyses of the impact on the design space. Furthermore, the approach defines a coupling of function and geometry models to support an inter-domain redesign process. The approach has been successfully applied in an industrial collaboration project with three aerospace companies, where the support of the method for design space exploration has been recognised. Future work sees the use of this method for design space exploration even outside the AM domain, but a more methodical definition of the relationship between the functional and geometrical domain is required to do so.
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| 49. |
|
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| 50. |
- Panarotto, Massimo, 1985, et al.
(författare)
-
Assessing the value of radical technology alternatives at system level
- 2018
-
Ingår i: Proceedings of International Design Conference, DESIGN. - : Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Croatia; The Design Society, Glasgow, UK. - 1847-9073. - 9789537738594 ; 2, s. 633-642
-
Konferensbidrag (refereegranskat)abstract
- This study investigates the challenge to assess value when alternative technologies - of radical nature - are integrated on complex products. The study highlights three main challenges: 1) value depends on how the overall product platform is impacted over time 2) value depends on combination effects between technologies and 3) value depends on how the technology balances internal and external stakeholders needs simultaneously. The paper describes how these challenges can be tackled by novel modelling methods, illustrated with an example related to structural batteries.
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