| 1. |
- Raudberget, Dag, et al.
(författare)
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Bridging the gap between functions and physical components through a structured functional mapping chart
- 2016
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Ingår i: Proceedings of the 2016 ISPE International Conference on Transdisciplinary Engineering, 4-6 October, Curitiba, 2016.. - : International Society for Productivity Enhancement. ; 4, s. 107-116
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Konferensbidrag (refereegranskat)abstract
- Functional modelling can be challenging to integrate with physical CAD-modelling, since the natures of these representations are quite different. This paper presents a methodology seeking to bridge these representations in a product platform context. The contribution of this work is a pragmatic way to improve the connections between Functional Requirements and CAD models. It does so by structuring functions, features and components and by linking these through tags in CAD-models. The methodology thereby associates the CAD models to the functional knowledge used when creating them. The result is the functional mapping chart, which is illustrated by an example from the automotive industry.
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| 2. |
- Grahn, Sten, et al.
(författare)
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Potential Advantages Using Large Anthropomorphic Robots in Human-robot Collaborative, Hand Guided Assembly
- 2016
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Ingår i: Procedia CIRP. - : Elsevier. - 2212-8271. ; 44, s. 281-286, s. 281-286
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Tidskriftsartikel (refereegranskat)abstract
- Collaborative robot installations often mean man-machine workspace sharing. This mode of operation can lead to reductions of tact time and work space requirements. We have analyzed potential further benefits of man-machine collaboration, where operators and powerful robots share workspace, cooperating when lifting and handling large objects. We found that this mode of operation has the potential to generate economic advantages by reducing the need for manual operators and lifting tools and by offering new opportunities for component logistics.
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| 3. |
- Landahl, Jonas, 1986, et al.
(författare)
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Assessing System Maturity of Interacting Product and Manufacturing Alternatives Before Early Technology Commitment
- 2015
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Ingår i: I24th International Association for Management of Technology Conference: Technology, Innovation and Management for Sustainable Growth, IAMOT 2015, The Westin Cape Town, South Africa, 8 June 2015 through 11 June 2015. - : International Association for Management of Technology. - 9781775921110 ; , s. 2358-2376
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Konferensbidrag (refereegranskat)abstract
- This paper presents a new way to support early assessment of interacting product and manufacturing technologies based on system maturity. This approach is illustrated by an example from the aerospace industry, where alternative technologies are introduced in an existing product and manufacturing systems platform. By assessing the system maturity of interacting technologies, alternative solutions can be eliminated before early technology commitment. This is beneficial for 1) clarifying the company’s status regarding capability and maturity, 2) eliminating immature technologies within a certain capability bandwidth, and 3) prioritizing advanced technology development initiatives with respect to the risk of implementing a manufacturing technology to interact with a product technology. It may also enable reduction in design rework and manufacturing rework that comes with failed maturity matching of product systems and manufacturing systems, thus possible reduction in lead-time and cost could be met.
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| 4. |
- Levandowski, Christoffer E, 1984, et al.
(författare)
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Accommodating Emerging Technologies in Existing Product Platforms
- 2015
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Ingår i: 24th International Conference for the International Association for Management of Technology (IAMOT) 2015, The WestinCape Town, South Africa, 8-11 June 2015. - : International Association for Management of Technology. - 9781775921110 ; , s. 2237-2252
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Konferensbidrag (refereegranskat)abstract
- For many companies, proficiency in introducing new technologies is central to their business. For instance, for suppliers in the aerospace industry, having extensive knowledge about a specific technology can be crucial for getting to take part in the next airplane project. However, when new technologies emerge as a result of advanced engineering, they are often hard to implement in product platforms. The fragile nature of a working platform originates from the complex relationships between subsystems and variants. Introducing a new technology into the already fine-tuned platform may affect the performance of the platform negatively, or generate a too large development effort to handle. This may lead to reluctance towards introduction of new promising technologies, which in the long run may result in technologies being discarded as infeasible or being introduced much later than necessary. To be able to assess the impact of a technology and safely accommodate it in an existing platform architecture, it needs to be modeled appropriately. Current models of technologies do not describe them in relation to the architecture they are to be implemented in. Further, the common platform architecture models describe change scenarios from a top-down perspective. Technology introduction would require changing the platform from a bottom-up perspective. This paper suggests an approach to accommodate introduction of emerging technologies into a product platform by means of:- Modeling the technologies as systems in a shared model. - Using trade-off curves to describe the bandwidth of technologies.- Introducing a method for changing a present product platform to incorporate new technologiesThe method addresses a number of different factors regarding the new technology, e.g. its maturity level, in order to assess the appropriate course of action to safely use the technology in the existing platform. The approach is illustrated using a case from the aerospace industry covering the implementation of water-cooling technology as a means to increase the performance of a jet engine component.
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| 5. |
- Levandowski, Christoffer E, 1984, et al.
(författare)
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Set-Based Concurrent Engineering for Early Phases in Platform Development
- 2014
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Ingår i: Moving Integrated Product Development to Service Clouds in the Global Economy - Proceedings of the 21st ISPE Inc. International Conference on Concurrent Engineering, CE 2014. ; , s. 564-576
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Konferensbidrag (refereegranskat)abstract
- Set-Based Concurrent Engineering (SBCE) is a comprehensive approach to achieve efficiency in product development by providing guidelines to align the development activities. Given a certain range in a design problem, a set of design solutions is defined. Eliminating infeasible regions gradually narrows the set down to a working solution. Similar to platform-based development, SBCE further aims to reuse design knowledge from past development efforts. Although they share the goal of design reuse, there is a fundamental difference between SBCE and platform-based design. The SBCE design process produces one solution while the creation and use of a platform produces a product family. This paper elaborates an approach for platform concept development. It uses set-based concurrent engineering and its principles to develop a platform based on functions and design solutions while preserving the bandwidth. It shows how function-means trees and trade-off curves can represent solution spaces. Further, these spaces are narrowed down to manageable and desirable size to represent a product platform in line with current technology and available manufacturing capabilities. The approach is illustrated with a case from the aerospace industry showing how a manufacturer of parts for a jet engine can develop comprehensive concepts for a platform. The design space is narrowed down using desired bandwidth and compatibility between design solutions. While the approach has proven feasible in the test case, it requires manufacturing and technology development to produce trade-off curves. This implicitly requires technology development and manufacturing development to precede product development. Alternatively, product development, production development and technology development need to be perfectly coordinated in a concurrent manner.
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| 6. |
- Raudberget, Dag, 1967, et al.
(författare)
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Combining Set-Based Concurrent Engineering and Function- Means Modelling to Manage Platform-Based Product Family Design
- 2015
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Ingår i: IEEE International Conference on Industrial Engineering and Engineering Management. - : IEEE. - 2157-3611 .- 2157-362X. - 9781479964109 ; 2015-January, s. 399-403
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Konferensbidrag (refereegranskat)abstract
- The purpose of this work is to develop a new design methodology for product platforms that combines Enhanced Function-Means Modelling and Set-BasedConcurrent Engineering. The methodology presents new ways to narrow down the design space, which is increasingly important when several alternative designs are generated in Set-Based Concurrent Engineering. The result is theArchitectural Option Chart that uses functional couplings between functional requirements and design solutions to eliminate unfeasible platform members.
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| 7. |
- Raudberget, Dag
(författare)
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Industrial Application of Set-based Concurrent Engineering – Managing the design space by using Platform System Families
- 2015
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- During product development, most of the customer value, as well as the cost and the quality of a product are defined. This key role of development in industry has led to an intense search for better ways to develop products, software, services and systems. Two development methodologies that have received positive attention for their efficiency are Set-Based Concurrent Engineering and platform-based design.This thesis presents the results of implementing the principles of Set-Based Concurrent Engineering (SBCE) in platform-based design as a means to improve the industrial product development. The contribution is a better understanding of SBCE and new ways to use its principles to support development processes. The results are developed in collaboration with industry and demonstrate that SBCE gives positive effects on many aspects of product development performance and on the resulting products. Further, it clarifies that SBCE has a distinctive way to manage the design space that promotes a thorough understanding of the important design parameters before committing to a specific design.Finally, this work presents a structured design process for managing the first phases of platform development. The studies in this thesis show that previous approaches in literature do not present methodological support for developing product architectures in the earliest stages of platform development. This work fills this void by introducing a new design methodology for modelling, assessing and narrowing down the architectural design space in the phases before embodiment. It allows exploration of more alternatives in the earliest phases of development, which ultimately may produce better designs.
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| 8. |
- Raudberget, Dag, 1967, et al.
(författare)
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Modelling and assessing platform architectures in pre-embodiment phases through set-based evaluation and change propagation
- 2015
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Ingår i: Journal of Aerospace Operations. - : IOS Press. - 2211-002X. ; 3, s. 203-221
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Tidskriftsartikel (refereegranskat)abstract
- The establishment of a platform architecture is a critical task but there is no methodological support for this in the firstphases of development. There are several approaches for evaluating designs and architectures when an initial design is present,however, not for the phases foregoing the embodiment of ideas into concepts. This paper fills this void by introducing a newdesign methodology for modelling, assessing and narrowing down the architectural design space. It allows exploration of morealternatives in the earliest phases of development, which ultimately may produce better designs. The result is a design space of amanageable and desirable size for subsequent embodiment and detailed design with traditional engineering tools. The advantageis that feasibility of the candidate platforms have been established to a high degree of certainty. The approach is illustrated witha case of redesign showing how a manufacturer of parts for a jet engine can use the methodology to model and assess platformconcepts in the earliest phase of development.
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| 9. |
- Arjomandi Rad, Mohammad, et al.
(författare)
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Correlation-based feature extraction from computer-aided design, case study on curtain airbags design
- 2022
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Ingår i: Computers in industry (Print). - : Elsevier. - 0166-3615 .- 1872-6194. ; 138
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Tidskriftsartikel (refereegranskat)abstract
- Many high-level technical products are associated with changing requirements, drastic design changes, lack of design information, and uncertainties in input variables which makes their design process iterative and simulation-driven. Regression models have been proven to be useful tools during design, altering the resource-intensive finite element simulation models. However, building regression models from computer-aided design (CAD) parameters is associated with challenges such as dealing with too many parameters and their low or coupled impact on studied outputs which ultimately requires a large training dataset. As a solution, extraction of hidden features from CAD is presented on the application of volume simulation of curtain airbags concerning geometric changes in design loops. After creating a prototype that covers all aspects of a real curtain airbag, its CAD parameters have been analyzed to find out the correlation between design parameters and volume as output. Next, using the design of the experiment latin hypercube sampling method, 100 design samples are generated and the corresponding volume for each design sample was assessed. It was shown that selected CAD parameters are not highly correlated with the volume which consequently lowers the accuracy of prediction models. Various geometric entities, such as the medial axis, are used to extract several hidden features (referred to as sleeping parameters). The correlation of the new features and their performance and precision through two regression analyses are studied. The result shows that choosing sleeping parameters as input reduces dimensionality and the need to use advanced regression algorithms, allowing designers to have more accurate predictions (in this case approximately 95%) with a reasonable number of samples. Furthermore, it was concluded that using sleeping parameters in regression-based tools creates real-time prediction ability in the early development stage of the design process which could contribute to lower development lead time by eliminating design iterations.
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| 10. |
- Hedelind, Mikael, et al.
(författare)
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Factory-in-a-Box - Solutions for Availability and Mobility of Flexible Production Capacity
- 2007
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Ingår i: The Swedish Production Symposium,2007.
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Konferensbidrag (refereegranskat)abstract
- The objective of this paper is to present examples of how to realize a flexible and reconfigurable production system. An ongoing research project in Sweden called Factory-in-a-Box will be presented which is one research initiative within this area. The purpose of the Factory-in-a-Box project is to develop solutions for mobile production capacity on demand. Three key features have been identified as enablers for these kinds of production capabilities: mobility, flexibility, and speed. The concept consists of standardized modules that can be installed in e.g. containers and easily transported by trucks, rail vehicles, and boats. The modules can easily be combined into complete production systems and reconfigured for new products and/or scaled to handle new volumes. The goal of the Factory-in-a-Box project is to build fully operative production modules that are developed in close cooperation between different academic and industrial partners. This paper will present the results from these demonstrators giving examples of the usability of the Factory-in-a-Box concept in industry.
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