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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.
Ola Isaksson; Timos Kipouros; Julian Martinsson; Massimo Panarotto; Jonas Kressin; Petter Andersson; John P. Clarkson. MULTI-DOMAIN DESIGN ASSESSMENT FOR AEROSPACE COMPONENTS INCLUDING WELD ACCESSIBILITY. Proceedings of the Design Society 2021, 1, 2217 -2226.
AMA StyleOla Isaksson, Timos Kipouros, Julian Martinsson, Massimo Panarotto, Jonas Kressin, Petter Andersson, John P. Clarkson. MULTI-DOMAIN DESIGN ASSESSMENT FOR AEROSPACE COMPONENTS INCLUDING WELD ACCESSIBILITY. Proceedings of the Design Society. 2021; 1 ():2217-2226.
Chicago/Turabian StyleOla Isaksson; Timos Kipouros; Julian Martinsson; Massimo Panarotto; Jonas Kressin; Petter Andersson; John P. Clarkson. 2021. "MULTI-DOMAIN DESIGN ASSESSMENT FOR AEROSPACE COMPONENTS INCLUDING WELD ACCESSIBILITY." Proceedings of the Design Society 1, no. : 2217-2226.
Khalil Al Handawi; Petter Andersson; Massimo Panarotto; Ola Isaksson; Michael Kokkolaras. Scalable Set-Based Design Optimization and Remanufacturing for Meeting Changing Requirements. 2021, 1 .
AMA StyleKhalil Al Handawi, Petter Andersson, Massimo Panarotto, Ola Isaksson, Michael Kokkolaras. Scalable Set-Based Design Optimization and Remanufacturing for Meeting Changing Requirements. . 2021; ():1.
Chicago/Turabian StyleKhalil Al Handawi; Petter Andersson; Massimo Panarotto; Ola Isaksson; Michael Kokkolaras. 2021. "Scalable Set-Based Design Optimization and Remanufacturing for Meeting Changing Requirements." , no. : 1.
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.
Olivia Borgue; Christopher Paissoni; Massimo Panarotto; Ola Isaksson; Tommaso Andreussi; Nicole Viola. Design for test and qualification through activity-based modelling in product architecture design. Journal of Engineering Design 2021, 1 -25.
AMA StyleOlivia Borgue, Christopher Paissoni, Massimo Panarotto, Ola Isaksson, Tommaso Andreussi, Nicole Viola. Design for test and qualification through activity-based modelling in product architecture design. Journal of Engineering Design. 2021; ():1-25.
Chicago/Turabian StyleOlivia Borgue; Christopher Paissoni; Massimo Panarotto; Ola Isaksson; Tommaso Andreussi; Nicole Viola. 2021. "Design for test and qualification through activity-based modelling in product architecture design." Journal of Engineering Design , no. : 1-25.
Coping with changing requirements by means of introducing design margins may result in overdesign. In this paper, we present a design optimization method for minimizing overdesign by exploiting additive remanufacturing. Our problem formulation makes use of recently defined constituents of design margins: buffer and excess. The proposed method can be used to obtain a set of design decisions for different changing requirement scenarios. We demonstrate it using 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.
Khalil Alhandawi; Massimo Panarotto; Petter Andersson; Ola Isaksson; Michael Kokkolaras. Optimization of Design Margins Allocation When Making Use of Additive Remanufacturing. Journal of Mechanical Design 2021, 1 -18.
AMA StyleKhalil Alhandawi, Massimo Panarotto, Petter Andersson, Ola Isaksson, Michael Kokkolaras. Optimization of Design Margins Allocation When Making Use of Additive Remanufacturing. Journal of Mechanical Design. 2021; ():1-18.
Chicago/Turabian StyleKhalil Alhandawi; Massimo Panarotto; Petter Andersson; Ola Isaksson; Michael Kokkolaras. 2021. "Optimization of Design Margins Allocation When Making Use of Additive Remanufacturing." Journal of Mechanical Design , no. : 1-18.
Jacob Muller; Massimo Panarotto; Ola Isaksson. Function Model-based Generation of CAD Model Variants. Computer-Aided Design and Applications 2021, 18, 1 .
AMA StyleJacob Muller, Massimo Panarotto, Ola Isaksson. Function Model-based Generation of CAD Model Variants. Computer-Aided Design and Applications. 2021; 18 (5):1.
Chicago/Turabian StyleJacob Muller; Massimo Panarotto; Ola Isaksson. 2021. "Function Model-based Generation of CAD Model Variants." Computer-Aided Design and Applications 18, no. 5: 1.
The higher satellite production rates expected in new megaconstellation scenarios involve radical changes in the way design trade-offs need to be considered by electric propulsion companies. In relative comparison, flexibility and qualification ability will have a higher impact in megaconstellations compared to traditional businesses. For these reasons, this paper proposes a methodology for assessing flexible propulsion architectures by taking into account variations in market behavior and qualification activities. Through the methodology, flexibility and qualification ability can be traded against traditional engineering attributes (such as functional performances) in a quantitative way. The use of the methodology is illustrated through an industrial case related to the study of xenon vs. krypton architectures for megaconstellation businesses. This paper provides insights on how to apply the methodology in other case studies, in order to enable engineering teams to present and communicate the impact of alternative architectural concepts to program managers and decision-makers.
Massimo Panarotto; Olivia Borgue; Ola Isaksson. Modelling Flexibility and Qualification Ability to Assess Electric Propulsion Architectures for Satellite Megaconstellations. Aerospace 2020, 7, 176 .
AMA StyleMassimo Panarotto, Olivia Borgue, Ola Isaksson. Modelling Flexibility and Qualification Ability to Assess Electric Propulsion Architectures for Satellite Megaconstellations. Aerospace. 2020; 7 (12):176.
Chicago/Turabian StyleMassimo Panarotto; Olivia Borgue; Ola Isaksson. 2020. "Modelling Flexibility and Qualification Ability to Assess Electric Propulsion Architectures for Satellite Megaconstellations." Aerospace 7, no. 12: 176.
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.
Jakob R. Müller; Massimo Panarotto; Ola Isaksson. Design Space Exploration of a Jet Engine Component Using a Combined Object Model for Function and Geometry. Aerospace 2020, 7, 173 .
AMA StyleJakob R. Müller, Massimo Panarotto, Ola Isaksson. Design Space Exploration of a Jet Engine Component Using a Combined Object Model for Function and Geometry. Aerospace. 2020; 7 (12):173.
Chicago/Turabian StyleJakob R. Müller; Massimo Panarotto; Ola Isaksson. 2020. "Design Space Exploration of a Jet Engine Component Using a Combined Object Model for Function and Geometry." Aerospace 7, no. 12: 173.
Apparent from the latest pandemic, the dynamics and rate of change in society accelerate on a global scale. Ongoing mega-trends in society, such as digitalization, sustainability, and servitization, fundamentally changes the conditions for manufacturers when developing and providing new products. This study clarifies the combined impact and consequences on product development capabilities in manufacturing firms of the three mega-trends: (i) digitalization, (ii) sustainability, and (iii) servitization. The research is based on a pre-study, complemented with a semi-structured interview study at small, medium-sized, and large Swedish-based manufacturing companies, and a systematic literature review. The research makes evident that the main challenge is to empower engineers and development teams to model, present, evaluate, and develop expected and smart digitalized solutions in a time-limited environment and prioritize the most resource efficient and sustainable solution. Therefore, four complementary support resources are suggested: (i) a knowledge management platform, (ii) a data management platform, (iii) a set of criteria and metrics measuring progression, and (iv) support methods and tools to define, model, and evaluate solutions. When integrated into a digital platform, developers can simultaneously access and process the necessary information needed for sustainable, digitalized, and servitized solutions.
Sophie Hallstedt; Ola Isaksson; Anna Öhrwall Rönnbäck. The Need for New Product Development Capabilities from Digitalization, Sustainability, and Servitization Trends. Sustainability 2020, 12, 10222 .
AMA StyleSophie Hallstedt, Ola Isaksson, Anna Öhrwall Rönnbäck. The Need for New Product Development Capabilities from Digitalization, Sustainability, and Servitization Trends. Sustainability. 2020; 12 (23):10222.
Chicago/Turabian StyleSophie Hallstedt; Ola Isaksson; Anna Öhrwall Rönnbäck. 2020. "The Need for New Product Development Capabilities from Digitalization, Sustainability, and Servitization Trends." Sustainability 12, no. 23: 10222.
As products are being developed over time and across organisations, the risk for unintended accumulation and mis-conception of margins allocated may occur. Accumulation of margins can result in over design, but also add risk due to under allocation. This paper describes the different terminology used in one organisation and shows the different roles margins play across the design process and in particular the how margins are a critical but often overlooked aspect of product platform design. The research was conducted in close collaboration with a truck manufacturer between 2013 and 2018. The objective was to gain understanding of the current use of margins, and associated concepts evolve along the product life cycle, across organisation and product platform representations. It was found that margins already play an important role throughout the entire design process; however, it is not recognised as a unified concept which is clearly communicated and tracked throughout the design process. Rather different stakeholders have different notions of margins and do not disclose the rationale behind adding margins or the amount that they have added. Margins also enabled designers to avoid design changes as existing components and systems can accommodate new requirements and thereby saving significant design time.
Claudia Eckert; Ola Isaksson; Safaa Lebjioui; Christopher F. Earl; Stefan Edlund. Design margins in industrial practice. Design Science 2020, 6, 1 .
AMA StyleClaudia Eckert, Ola Isaksson, Safaa Lebjioui, Christopher F. Earl, Stefan Edlund. Design margins in industrial practice. Design Science. 2020; 6 ():1.
Chicago/Turabian StyleClaudia Eckert; Ola Isaksson; Safaa Lebjioui; Christopher F. Earl; Stefan Edlund. 2020. "Design margins in industrial practice." Design Science 6, no. : 1.
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).
Euan Bonham; Kerr McMaster; Emma Thomson; Massimo Panarotto; Jakob Ramon Müller; Ola Isaksson; Emil Johansson. Designing and Integrating a Digital Thread System for Customized Additive Manufacturing in Multi-Partner Kayak Production. Systems 2020, 8, 43 .
AMA StyleEuan Bonham, Kerr McMaster, Emma Thomson, Massimo Panarotto, Jakob Ramon Müller, Ola Isaksson, Emil Johansson. Designing and Integrating a Digital Thread System for Customized Additive Manufacturing in Multi-Partner Kayak Production. Systems. 2020; 8 (4):43.
Chicago/Turabian StyleEuan Bonham; Kerr McMaster; Emma Thomson; Massimo Panarotto; Jakob Ramon Müller; Ola Isaksson; Emil Johansson. 2020. "Designing and Integrating a Digital Thread System for Customized Additive Manufacturing in Multi-Partner Kayak Production." Systems 8, no. 4: 43.
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.
Kilian Gericke; Claudia Eckert; Felician Campean; P. John Clarkson; Elias Flening; Ola Isaksson; Timos Kipouros; Michael Kokkolaras; Christian Köhler; Massimo Panarotto; Miriam Wilmsen. Supporting designers: moving from method menagerie to method ecosystem. Design Science 2020, 6, 1 .
AMA StyleKilian Gericke, Claudia Eckert, Felician Campean, P. John Clarkson, Elias Flening, Ola Isaksson, Timos Kipouros, Michael Kokkolaras, Christian Köhler, Massimo Panarotto, Miriam Wilmsen. Supporting designers: moving from method menagerie to method ecosystem. Design Science. 2020; 6 ():1.
Chicago/Turabian StyleKilian Gericke; Claudia Eckert; Felician Campean; P. John Clarkson; Elias Flening; Ola Isaksson; Timos Kipouros; Michael Kokkolaras; Christian Köhler; Massimo Panarotto; Miriam Wilmsen. 2020. "Supporting designers: moving from method menagerie to method ecosystem." Design Science 6, no. : 1.
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.
Khalil Al Handawi; Petter Andersson; Massimo Panarotto; Ola Isaksson; Michael Kokkolaras. Scalable Set-Based Design Optimization and Remanufacturing for Meeting Changing Requirements. Journal of Mechanical Design 2020, 143, 1 -20.
AMA StyleKhalil Al Handawi, Petter Andersson, Massimo Panarotto, Ola Isaksson, Michael Kokkolaras. Scalable Set-Based Design Optimization and Remanufacturing for Meeting Changing Requirements. Journal of Mechanical Design. 2020; 143 (2):1-20.
Chicago/Turabian StyleKhalil Al Handawi; Petter Andersson; Massimo Panarotto; Ola Isaksson; Michael Kokkolaras. 2020. "Scalable Set-Based Design Optimization and Remanufacturing for Meeting Changing Requirements." Journal of Mechanical Design 143, no. 2: 1-20.
In the era of digitalization, manufacturing companies expect their growing access to data to lead to improvements and innovations. Manufacturing engineers will have to collaborate with data scientists to analyze the ever-increasing volume of data. This process of adopting data science techniques into an engineering organization is a sociotechnical process fraught with challenges. This article uses a participant observation case study to investigate and discuss the sociotechnical nature of the adoption data science technology into an engineering organization. In the case study, a young data scientist/statistician interacted with experienced production engineers in a global automotive organization to mutual satisfaction. However, the case study highlights the mis-aligned expectations between engineers and data scientists and knowledge in what is necessary to successfully benefit from manufacturing process data. The results reveal that the engineers had an initially romantic and idealistic view on how data scientists can bring value out of dispersed and complex information residing in the multisite manufacturing organization’s datasets in a “magic” way. Conversely, the data scientist had not enough engineering and contextual understanding to ask the right questions. The case reveals important shortcomings in the sociotechnical processes that undergo changes as digitalization is brought into mature engineering organizations and points to a lack of knowledge on multiple levels of the data analysis process and the ethical implications this could have.
Claudia Eckert; Ola Isaksson; Calandra Eckert; Mark Coeckelbergh; Malin Hane Hagström. Data Fairy in Engineering Land: The Magic of Data Analysis as a Sociotechnical Process in Engineering Companies. Journal of Mechanical Design 2020, 142, 1 .
AMA StyleClaudia Eckert, Ola Isaksson, Calandra Eckert, Mark Coeckelbergh, Malin Hane Hagström. Data Fairy in Engineering Land: The Magic of Data Analysis as a Sociotechnical Process in Engineering Companies. Journal of Mechanical Design. 2020; 142 (12):1.
Chicago/Turabian StyleClaudia Eckert; Ola Isaksson; Calandra Eckert; Mark Coeckelbergh; Malin Hane Hagström. 2020. "Data Fairy in Engineering Land: The Magic of Data Analysis as a Sociotechnical Process in Engineering Companies." Journal of Mechanical Design 142, no. 12: 1.
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.
Lydia Lawand; Massimo Panarotto; Petter Andersson; Ola Isaksson; Michael Kokkolaras. Dynamic Lifecycle Cost Modeling for Adaptable Design Optimization of Additively Remanufactured Aeroengine Components. Aerospace 2020, 7, 110 .
AMA StyleLydia Lawand, Massimo Panarotto, Petter Andersson, Ola Isaksson, Michael Kokkolaras. Dynamic Lifecycle Cost Modeling for Adaptable Design Optimization of Additively Remanufactured Aeroengine Components. Aerospace. 2020; 7 (8):110.
Chicago/Turabian StyleLydia Lawand; Massimo Panarotto; Petter Andersson; Ola Isaksson; Michael Kokkolaras. 2020. "Dynamic Lifecycle Cost Modeling for Adaptable Design Optimization of Additively Remanufactured Aeroengine Components." Aerospace 7, no. 8: 110.
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.
O. Isaksson; Claudia Eckert; M. Panarotto; J. Malmqvist. YOU NEED TO FOCUS TO VALIDATE. Proceedings of the Design Society: DESIGN Conference 2020, 1, 31 -40.
AMA StyleO. Isaksson, Claudia Eckert, M. Panarotto, J. Malmqvist. YOU NEED TO FOCUS TO VALIDATE. Proceedings of the Design Society: DESIGN Conference. 2020; 1 ():31-40.
Chicago/Turabian StyleO. Isaksson; Claudia Eckert; M. Panarotto; J. Malmqvist. 2020. "YOU NEED TO FOCUS TO VALIDATE." Proceedings of the Design Society: DESIGN Conference 1, no. : 31-40.
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.
Olivia Borgue; Jakob Müller; Alexander Leicht; Massimo Panarotto; Ola Isaksson. Constraint Replacement-Based Design for Additive Manufacturing of Satellite Components: Ensuring Design Manufacturability through Tailored Test Artefacts. Aerospace 2019, 6, 124 .
AMA StyleOlivia Borgue, Jakob Müller, Alexander Leicht, Massimo Panarotto, Ola Isaksson. Constraint Replacement-Based Design for Additive Manufacturing of Satellite Components: Ensuring Design Manufacturability through Tailored Test Artefacts. Aerospace. 2019; 6 (11):124.
Chicago/Turabian StyleOlivia Borgue; Jakob Müller; Alexander Leicht; Massimo Panarotto; Ola Isaksson. 2019. "Constraint Replacement-Based Design for Additive Manufacturing of Satellite Components: Ensuring Design Manufacturability through Tailored Test Artefacts." Aerospace 6, no. 11: 124.
In complex products the values of parameters are rarely exactly the required values, rather they often have a margin that might be designed in deliberately or be the incidental results of other design decisions. These margins play a critical role in design processes in managing engineering change and iteration. While engineers often talk about margins informally, designers and researchers also use other terms for specific margin concepts. This paper reviews the existing literature on related concepts and defines margins formally. It discusses the role margins play in handling uncertainty by distinguishing between buffer and excess. Buffer deals with uncertainty and excess with the remaining overcapacity of the design. Buffer can transition into excess of the design solution if the uncertainty can be reduced. The concepts are applied to the temperature margins of several candidate materials for a non-rotary jet engine component. This shows that a clear understanding of margins can help a company to select design alternatives.
Claudia Eckert; Ola Isaksson; Chris Earl. Design margins: a hidden issue in industry. Design Science 2019, 5, 1 .
AMA StyleClaudia Eckert, Ola Isaksson, Chris Earl. Design margins: a hidden issue in industry. Design Science. 2019; 5 ():1.
Chicago/Turabian StyleClaudia Eckert; Ola Isaksson; Chris Earl. 2019. "Design margins: a hidden issue in industry." Design Science 5, no. : 1.