| 1. |
- Hallberg, Peter, 1974-
(författare)
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On Knowledge Creation and Learning at the Intersection of Product Development and Engineering Education
- 2021
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Today’s demands on higher engineering education given the rapid transformation of society are, to say the least, multifaceted. Rapidly increased complexity of technology as well as adaptation to sustainability requirements are causing major transformations and mergers of whole domains of technology that strongly impact current and future engineering workforces within these domains, in particular, the need for new competencies. To adapt to industry demands for engineering competence that fits new constellations of technology domains, providers of advanced engineering training – i.e., engineering faculties – need to inventory their toolbox for ways to support knowledge creation processes. Product development theory is a central part of many types of academic engineering programs. However, as the product development process itself is a process of knowledge creation, it also has strong relations to theories of learning. This thesis explores the idea that some of the tools of engineering that are also taught at engineering faculties and therefore are familiar to their members can beneficially be applied to the development and management of engineering curricula. This thesis explores the domains of product development theory, engineering education and learning analytics in search of overlapping approaches to knowledge creation. The outcome of this search, which are also the result of this thesis, is a set of proposed tools, measures, and approaches for the development, management, content, and arrangement of engineering curriculum. The main contributions focus on the use of physical artifacts and their contribution to engineering educational frameworks, such as the Conceiving – Designing – Implementing – Operating (CDIO) initiative. For this purpose, the thesis picks up on a previously developed concept of low-cost demonstrators for the establishment of a formalized learning and enabling platform that promotes implementation and execution of the CDIO framework. Furthermore, by adopting a similar approach to product development and learning theory, additional tools are identified and developed for curriculum adaptation, enhancement, and management. In particular, by examining the curriculum from previously unexplored perspectives followed by establishment of novel measurements, this thesis demonstrates how curriculum developers and program managers can increase their insights into the outcomes of their decisions.
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| 2. |
- Henriksson, Fredrik, 1988-
(författare)
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Introducing New Materials in the Automotive Industry : Managing the Complexity of Introducing New Materials in Existing Production Systems
- 2017
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Passenger vehicles are central to Western society, and contribute to a significant part of our greenhouse gas emissions. In order to reduce emissions, the automotive industry as a whole is working to reduce mass in passenger vehicles in order to reduce energy consumption. One way to reduce mass is to introduce lightweight materials in the body of the vehicle. This research aims to explore the relationship between product and production system when introducing new materials.Besides a theoretical review and an industry-centered technological mapping, four case studies have been conducted during the course of this licentiate thesis. Two case studies were conducted with engineering design students working as development teams, one case study with the author as the developer and finally one case study in an industrial environment at a product owning company with in-house production. The goal of the case studies has been to increase the collective knowledge of how product development decisions affect production development decisions, and vice versa, when developing passenger vehicles in new materials.In the following analysis of case study outcomes, a number of factors important for introducing new materials are discussed. The relationship between product and production is investigated, both in terms of how the production system affects the product and how the product affects the production system. The outcome from this analysis is a mapping of important factors for automotive industry companies to understand and identify when looking at introducing new materials in existing production systems. Finally, a suggestion for future research efforts is presented.
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| 3. |
- Ashour Pour, Milad, et al.
(författare)
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Deployment of additive manufacturing and robotics for increasing flexibility in productions
- 2022
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Ingår i: SPS2022. - Amsterdam : IOS Press. - 9781643682686 - 9781643682693 ; , s. 533-541
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Konferensbidrag (refereegranskat)abstract
- As manufacturing industry seeks different strategies and technologies to respond to the ever-increasing demands in markets that prioritize versatility of products with low-volume productions, certain technologies and strategies gain more attraction and form higher acceptance levels among different sectors. Individual firms are driven by their market requirements. Various factors including product specification, assembly sequence, and manufacturing operations are central to the decisions that are made with respect to the type of technology to respond to market dynamics. Additive Manufacturing (AM) is one of the technology alternatives that has exhibited remarkable strengths in countering market disruptions. Although AM can be utilized along conventional technologies (i.e., subtracting and forming) in a hybrid context to combine advantages and offset weaknesses of each category, the arguments supporting its applications would need to be formulated rigorously to ensure investments are rightfully justified. Another alternative continuously investigated by companies is automation and more specifically, using robotics for various purposes e.g., operations like welding and painting, material handling, machine tending, etc. Both industrial robots and the applications that require a collaboration between humans and robots can be valid in this context. Considering advancements in AM and Automation and their potentials in increasing flexibility, expediting operations, and leveraging cost advantages, this paper explores how AM and automation in tandem could improve flexibility in productions. Results of this study can be used for proposing a conceptual model which will be further developed and then tested on industrial cases in future studies. While this study incorporates raw data about processing requirements in production that has been obtained via interviews with industrial companies, inputs about the technologies i.e., AM and robotics are derived from literature.
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| 4. |
- Ashourpour, M., et al.
(författare)
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Real-Time Defect and Object Detection in Assembly Line : A Case for In-Line Quality Inspection
- 2023
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Ingår i: Flexible Automation and Intelligent Manufacturing. - : Springer. - 9783031382406 - 9783031382413 ; , s. 99-106
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Konferensbidrag (refereegranskat)abstract
- Identification of flawed assemblies and defective parts or products as early as possible is a daily struggle for manufacturing companies. With the ever-increasing complexity of assembly operations and manufacturing processes alongside the need for shorter cycle times and higher flexibility of productions, companies cannot afford to check for quality issues only at the end of the line. In-line quality inspection needs to be considered as a vital part of the process. This paper explores use of a real-time automated solution for detection of assembly defects through YOLOv8 (You Only Look Once) deep learning algorithm which is a class of convolutional neural networks (CNN). The use cases of the algorithm can be extended into detection of multiple objects within a single image to account for not only defects and missing parts in an assembly operation, but also quality assurance of the process both in manual and automatic cells. An analysis of YOLOv8 algorithm over an industrial case study for object detection shows the mean average precision (mAP) of the model on the test dataset and consequently its overall performance is extremely high. An implementation of this model would facilitate in-line quality inspection and streamline quality control tasks in complex assembly operations.
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| 5. |
- Azizpour, G., et al.
(författare)
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Enhancing Manufacturing Flexibility Through Automation Packaged Solution (APS) : A Case Study Approach
- 2024
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Ingår i: Advances in Transdisciplinary Engineering. - : IOS Press BV. - 9781643685106 - 9781643685113 ; , s. 219-230
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- The use of automation is reshaping tasks in diverse industries, leading to increased productivity and efficiency. The manufacturing sector, in particular, has enjoyed significant advantages from automation, including enhanced quality control, waste reduction, and improved worker safety. However, while the advantages of automation in manufacturing are clear, the implementation of automation in complex manufacturing processes is not without its challenges. One such challenge is ensuring adaptability to new products. In addition, the initial investment for automation in manufacturing processes often presents a significant financial difficulty, particularly in the areas of engineering, design, and programming. The aim of this paper is to provide flexible solutions that can be adopted on any manufacturing line within a short timeframe. This type of flexible solution is referred to as Automation Packaged Solution (APS). APSs involve the deployment of robotic systems and vision technologies to automate specific tasks. The key advantage of these flexible solutions is their ability to adapt to the introduction of new products into the production line without the need for extensive reengineering and reprogramming. The approach involves designing detailed computer simulations based on the initial solutions and bringing the solution to life through an offline commissioning method. In this research, a case study was conducted at a manufacturing plant in Sweden, where two APSs were introduced to their assembly line: Precise screwing and accurate application of product labeling. These APSs play a crucial role in facilitating rapid upgrades and adjustments to automation systems, especially considering the diverse range of product models. This adaptability reduces the time and resources required for reconfiguration and contributes to enhanced operational efficiency, cost-effectiveness, and more sustainable manufacturing solutions. Moreover, it opens up the possibility of transferring these APSs to another production line if the need arises.
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| 6. |
- Björnsson, Andreas, 1981-, et al.
(författare)
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Automated material handling in composite manufacturing using pick-and-place systems - a review
- 2018
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Ingår i: Robotics and Computer-Integrated Manufacturing. - : Elsevier BV. - 0736-5845 .- 1879-2537. ; 51, s. 222-229
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Tidskriftsartikel (refereegranskat)abstract
- With increasing use of fiber reinforced polymer composites follows a natural pursuit for more rational and effective manufacturing. Robotic pick-and-place systems can be used to automate handling of a multitude of materials used in the manufacturing of composite parts. There are systems developed for automated layup of prepreg, dry fibers and thermoplastic blanks as well as to handle auxiliary materials used in manufacturing. The aim of this paper is to highlight the challenges associated with automated handling of these materials and to analyze the main design principles that have been employed for pick-and-place systems in terms of handling strategy, reconfigurability, gripping technology and distribution of gripping points etc. The review shows that it is hard to find generic solutions for automated material handling due to the great variety in material properties. Few cases of industrial applications in full-scale manufacturing could be identified.
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| 7. |
- Björnsson, Andreas, 1981-, et al.
(författare)
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Automation of composite manufacturing using off-the-shelf solutions; three cases from the aerospace industry
- 2015
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Ingår i: ICCM International Conferences on Composite Materials. - : International Committee on Composite Materials.
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Konferensbidrag (refereegranskat)abstract
- With an increased use of composite materials follows a need for rational, cost-efficient manufacturing processes. This paper explores how off-the-shelf solutions, developed for other purposes than composite manufacturing, can be used to build systems for automated composite manufacturing. Three demonstrators, each of them dealing with a specific type of material and all of them representing different manufacturing technologies for automated composite manufacturing, are presented and analyzed to find aspects that affect the ability to use off-the-shelf solutions. The three demonstrators target low to medium manufacturing volumes of complex products and they have been developed in collaboration with industrial partners within the aerospace industry. The conclusions drawn from the development of the demonstrators are that it is technically feasible to use off-the-shelf solutions in the three cases while adhering to the high quality standards of the industry. Furthermore three groups of aspects, quality aspects, product aspects and system aspects, which affect the ability to use off-the-shelf solutions for automated composite manufacturing, are identified.
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| 8. |
- Björnsson, Andreas, 1981-, et al.
(författare)
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Robot-forming of prepreg stacks - Development of equipment and methods
- 2016
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Ingår i: ECCM 2016 - Proceeding of the 17th European Conference on Composite Materials. - : European Conference on Composite Materials, ECCM. - 9783000533877
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Konferensbidrag (refereegranskat)abstract
- Within the aerospace industry the manufacturing of composite components with complex shapes, such as spars, ribs and beams are often manufactured using manual layup and forming of prepreg material. Automated processes for prepreg layup and efficient forming techniques like vacuum forming are sometimes difficult to employ to these type of products due to technical limitations. This paper describes the development of tools and the forming sequence needed to automate sequential forming of a complex shape using an industrial robot. Plane prepreg stacks are formed to the final shape using a dual-arm industrial robot equipped with rolling tools. Tests show that the developed tools and the employed sequence can be used to form stacks to the desired shape with acceptable quality.
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| 9. |
- Bäckstrand, Jenny, 1979-, et al.
(författare)
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Mutual benefits – Linking SMEs in wood industry and HEIs using a translator
- 2022
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Ingår i: SPS2022. - Amsterdam : IOS Press. - 9781643682686 - 9781643682693 ; , s. 689-697
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Konferensbidrag (refereegranskat)abstract
- The HEIs third mission is to collaborate with external organizations. In this paper we focus on how SMEs in wood industry can collaborate with HEI by using a link that can translate SMEs needs and challenges to HEIs offer. This is a first attempt to describe this function that we call translator. We have identified and described four translator roles in different scenarios in this paper.
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| 10. |
- Bäckstrand, Jenny, 1979-, et al.
(författare)
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Non-virgin textile materials challenging the purchasing role in a circular industry
- 2023
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Konferensbidrag (refereegranskat)abstract
- In the era of moving towards a Circular Economy (CE), companies are facing challenges in redesigning their supply chains, towards managing i.e., recycled material and new requirements. Today, the textile industry is one of the segments that affects environmental sustainability most. Therefore, this paper’s purpose is to explore how non-virgin textile materials challenging the purchasing role in a circular industry, especially related to the perspective from Small and Medium-Sized Enterprises (SMEs). And the resulting research question is, therefore, what different challenges must a purchasing organization manage related to textile products in a circular industry.
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