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A Design Methodology to Overcome Local Effects in Joining Sandwich Materials

Krishnamoorthy, Sivakumara Kannappan; Feldhusen, Jörg • 2009

proceeding: Proceedings of the 17th International Conference on Engineering Design (ICED'09), Vol. 7
section: Design for X, Design to X
editor: Norell Bergendahl, M.; Grimheden, M.; Leifer, L.; Skogstad, P.; Lindemann, U.
pages: 1-12

abstract: This paper proposes a design methodology which emphasizes the usage of CAE tools to overcome local effects in joining sandwich materials at an early stage of the product development. Several case studies have been carried out using finite element analysis to understand the local behavior of the sandwich beam mainly under transverse loads. The results of the simulations are used to minimize stiffness mismatching at the connection interfaces by deriving necessary functions, choice of materials and preliminary embodiment parameters of a sandwich connector. A demonstration example is used to illustrate the underlying principles.

keywords: Sandwich materials, design theory, numerical simulation, joining techniques

New ways of data processing for increasing of the efficiency within the product development

Westphal, Christoph; Meerkamm, Harald; Wartzack, Sandro; Paetzold, Kristin • 2009

abstract: Future development processes need measurability of the development quality and of the product properties considerable before the beginning of the production and assembly process. This checkup can at least take place with virtual examinations (simulations). These virtual examinations should reflect the degree of maturity and should be used for the release of production. However, the benchmark of the whished product properties and the product behavior requires a coherent dataset, which can be additional usable for a multitude of possible simulations, which has to be strongly integrated in the product development process (PDP). Moreover the increasing mass of information caused by complex and mechatronic products as well as the interdisciplinary work and globalization lead to the need of finding and analyzing new ways of data processing for increasing of the efficiency within the product development

keywords: Benchmark of properties, Degree of maturity, CAx-integration, Product model

Improving Eco-Efficiency in Office Environments: Design for Good Use

Rojas, Johanna; Collado-Ruiz, Daniel • 2009

abstract: Eco-efficiency has been analyzed for many industrial activities, although some environments such as office have been disregarded. Even though with a low relative impact, the high amount of office equipment can represent an environmental problem. This project assesses office spaces and proposes alternatives to improve their Eco-efficiency. Worth of products and systems, as well as environmental considerations, were identified inside two companies. This paper describes the experiment, and points out the user activities that can potentially be changed in order to reduce the high impact on the use phase. Some of those prospective improvements are explained, and some ground rules are set for what in this paper is called Design for Good Use.

keywords: Eco-efficiency, Ecodesign, Worth, Environmental Impact, Design for X.

A Quality Improving Method to Assist the Integrated Product Development Process

Negroni, Daniella Yada; Trabasso, Luís Gonzaga • 2009

abstract: Several studies confirm the benefits of anticipating the problems that might occur in the products lifecycle to the conceptual phase of the integrated product development (IPD) process. The challenge posed by the IPD process is to develop adequate tools and procedures that make feasible the required anticipation. One problem faced by the IPD, is to control the variation of the product manufacturing process that impacts directly both product cost and delivery schedules. Corrective actions must be anticipated and carried out to reduce this variability and to increase product quality right from the beginning of the product development process. This paper presents the Design for Quality Costs - DFQC - a method for minimizing the non-quality costs of the new products through the anticipation of improvements in the product manufacturing process and/or product design. The proposed method is also based on the concepts of Lean Engineering Thinking and DFSS - Design for Six Sigma. This paper also shows that the proposed method can be linked to the products virtual environment built by Digital Manufacturing software applications commercially available.

keywords: IPD ? Integrated Product Development, DFSS ? Design for Six Sigma, Quality Costs

Extraction of Latent Emotional Factors by Analyzing Human Sensitivity towards Unexplored Design: Application to Product Sound Design

Yanagisawa, Hideyoshi; Kataoka, Atsushi; Murakami, Tamotsu; Ohtomi, Koichi; Hosaka, Rika • 2009

abstract: In the design of emotional qualities one of the most important and difficult issues is setting quantitative evaluation criteria to evaluate such qualities. Most conventional approach formalizes emotional qualities expressed by adjectives using the sensory test with existing products. However, the variety of existing products is limited. The obtained evaluation criteria may not cover areas of a design space where future designs would appear. In this paper, we propose a method to cover such untouched area using composite design sample. We apply the method to extract a potential factor for the future design of product sound quality. To create such composite design samples, we set efficient design features that take into consideration the completeness of design space and the diversity of a target emotional quality that we quantify using the results of sensory tests with existing products. We conducted sensory test with composite design samples, in order to discuss changes introduced by adding composite samples. We extracted a new emotional scale of target emotional quality "expensiveness of machine sound" that was not found in the sensory test based only on the existing product sound.

keywords: emotional quality, design for machine sound, sound quality metrics, unexplored feature area, multivariate analysis.

Integral Design for Open Building

Zeiler, Wim; Savanovic, Perica; Quanjel, Emile • 2009

abstract: There is a growing awareness of sustainability that leads towards knowledge transfer and research between companies and the Dutch knowledge and research institutes within the building industry. The principles of the IFD (Industrial Flexible Dismountable) concept aim at an integrated approach within the design process to reach a maximum level of integration between designers from different disciplines. A newly developed method for structuring integral design processes enables design team support during designing and further stimulates exchange of ideas and concepts. This approach is tested within a professional context of a building design project. To support architects more effectively with their tasks the domain-independent integral design method was developed in the lines with Open building. This specific multi-disciplinary approach helped architecture and engineering. We think that the proposed Integral Design method is a possible solution for support of the design team in the conceptual phase of building design.

keywords: Integral Design, Open Building, Case study

Design for Reconfigurability: Achieving Flexibility in Light Machines

Mullineux, Glen; Matthews, Jason; Medland, Tony • 2009

abstract: Design for Reconfigurability is emerging as another important methodology of the "design for X". The important ideas behind the approach are discussed and their application is considered to the design of reconfigurable packaging machines for handling carton erection. It is found that typical motions required of such machines can be identified and generic mechanism modules to create these can be designed. It is shown that these modules can be combined to handle a range of different carton sizes and styles.

keywords: Design for reconfigurability, machine design, packaging machines, flexibility, cartons

Assembly-Oriented Product Structure based on Preliminary Assembly Process Engineering

Demoly, Frédéric; Gomes, Samuel; Eynard, Benoît; Rivest, Louis; Sagot, Jean-Claude • 2009

abstract: Currently, product design is mainly influenced by customer requirements, i.e. designers are more and more focused to have a well-balanced product between function and form. However, other requirements from corporate processes such as assembly engineering should be taken into account during the design process to avoid iterations problems and therefore a lack of efficiency and productivity. Based on intensive research over the past several years through assembly planning and Design for Assembly issues, an emergent research topic is bound to integrate product design and assembly sequence planning in the broader context of Systems Engineering and Product Lifecycle Management. Thus, a top-down approach called ?Assembly-Oriented Design? is considered to design product integrating assembly engineering information in a right first time approach. This paper presents an assembly-oriented product structure methodology based on assembly rules using the SysML paradigm to model product viewpoints relationships for assembly in the early stages of the design process. The presented industrial automotive case belongs to an exhaust system: a Catalytic Converter & Diesel Particulate Filter system.

keywords: Assembly-Oriented Design, Systems Engineering, Assembly Sequence, Product structure

The Trojan Horse Method as a Vector of Ecodesign Integration: A Case Study at a French SME

Reyes, Tatiana; Rohmer, Serge • 2009

abstract: The research presented in this paper focuses on integrating environmental awareness into the design processes at SMEs. The results of a pilot survey carried out on some pioneer French companies show that integrating ecodesign principles requires appropriate methods to base this approach on. The mechanism proposed for this purpose have called the "methodological Trojan horse" approach ("mTh") because the underlying strategy consists in introducing an appropriate pretext (the tool) promoting teamwork and supplying the organization with the necessary skills to develop the tool in a later stage. The "mTh" approach based on the use of the ecodesign tool facilitates the propagation of sustainable design knowledge at all levels within the company and thus induces the company to progress towards complete integration (from a partially sustainable design approach to a complete eco-innovation approach integrating the requirements of sustainable development). The whole mTh concept was tested during a period of two years at a French SME. The results obtained show the benefits we can get by using this integrated approach based on the "mTh" mechanism.

keywords: Ecodesign, appropriation, methods and tools, the methodological Trojan horse

Influence of the Multiple Life Cycles on the Environmental Impact of a Product

Tchertchian, Nicolas; Liang, Haining; Millet, Dominique • 2009

abstract: One of the design problems of B2C products results from their increasingly short lifespan. The technological changes, associated with the evolutions of use, lead the companies indeed to renew their ranges more and more early. This tendency generates waste more and more, while some components are thrown quickly they could be used in new generations of products; the remanufacturing appears of this fact as a promising solution. However, the remanufacturing can be economically and environmentally beneficial only if the product and its life cycle are designed by taking account of the value, the nature and lifespan of the modules to be re-used, and the lifespan of the product. This article proposes an approach of green design of reusable modules with environmental and economic evaluations covering Multiples Life Cycles (MLC). We introduce into this article the parameters of number of cycle, duration of cycle and the number of reusable modules. This approach was tested within the framework of a comparison of 3 espresso machines. This test made it possible to show that the product decomposition in module with MLC for reusable modules have a better environmental and economic performance.

keywords: Remanufacturing, Multiples Life Cycles, Modularization, LCA.

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