June 18, 2006
June 18, 2006
June 21, 2006
Design in Engineering Education
11.955.1 - 11.955.13
NEW ENGINEERING DESIGN CONCEPTS FOR SUSTAINABLE PRODUCTS
More restrictive environmental legislation as well as increasing environment-related costs have lead to the consideration of new design aspects during product development. Design teams must consider the effects of the entire life-cycle at the product design stage. Engineering design education plays a major role in defining the way to achieve sustainable futures by providing engineering students with the tools necessary to create innovative products with acceptable life cycle costs and environmental impact during and after the product use. To address this need projects are assigned to students in senior-level course MAK422E Engineering Design at Istanbul Technical University Mechanical Engineering Dept. In this course, the projects are prepared as teams of 7 to 8 students with an objective to redesign a product to reduce its environmental impact, while maintaining functionality and costs. To accomplish this goal, several DfE (Design for Environment) approaches (e.g., design for disassembly, design for reuse/remanufacturing, design for recycling, design for energy efficiency, design for minimum material usage, and design for minimum hazardous material) are applied. As a result of this effort several useful and new design concepts have been derived for different household appliances. In this paper, new aspects in the design process from definition to detail is presented, which is applied by the students for more environmentally-friendly products.
A variety of design courses exist in engineering education. The primary objective of such courses is to teach engineering design fundamentals utilizing repeatable design techniques. The most popular approach to teach undergraduate engineering design is through a structured, problem solving method that students use to tackle open-ended design problems1-4. The focus has been shifting toward providing tools and techniques to new designers that allow them to evaluate the cost, manufacturing, usability, and environmental consequences of their designs. Some senior-level design courses address these issues through the use of Design for X concepts and techniques. Design for Environment (DfE), or Ecodesign, assists product developers in reducing the life cycle environmental impact of a product by enhancing its design. DfE includes reducing resource consumption, in terms of material and energy, and pollution prevention5-7. Similarly, Design for Dissassembly (DfD) and Design for Recycling (DfR) allow the product designer to have a substantial, positive impact on the environmental aspects of a product’s life cycle.
Life Cycle Assesment (LCA) tools also assists the designer in reducing product environmental impacts. The ultimate goal of LCA is to minimize the environmental burden arising from the material acquisition, manufacture, use, and postuse (e.g., reuse, remanufacture, recycle). The following steps are used in LCA: (1) Define scope and boundaries, (2) Conduct a life cycle inventory, (3) Conduct a life cycle impact assessment, and (4) Conduct an improvement analysis.
Tumkor, S., & Haapala, K., & Kumar, V., & Sutherland, J. (2006, June), New Engineering Design Concepts For Sustainable Products Paper presented at 2006 Annual Conference & Exposition, Chicago, Illinois. https://peer.asee.org/758
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