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Abstract: Cost
and environmental impact are the two primary objectives for the material
selection problem in green design. The quantitative analysis method is
presented for the problem with the life cycle concept. The objectives
and constraint conditions of the material selection problem are analyzed
in green design, and the multi-objective decision-making model is
established, which takes material lifecycle cost and lifecycle
environmental impact (EI) as the two objective variables, and mechanical
and physical properties, recyclability and other qualitative properties
as the constraints. The material lifecycle cost is aggregated by the
production cost, manufacturing cost and recycling cost. Eco-Indicator’99
is adopted to analyze the holistic lifecycle environmental impact of
materials and processes, in order to quantify the decision objective EI.
The possible solutions search algorithm (PSSA) is used to pre-select the
materials to obtain the feasible solutions, and TOPSIS method is used to
acquire the optimal solution. As shown in the reading lamp design case
study presented for the materials selection of the reading lamp, the
results of the multi-objective decision-making analysis can provide
useful design guidelines.
Key words: Material
selection Green design Multi-objective decision-making Eco-Indicator
CLC No: TB21
TH122
国家自然科学基金资助项目(50375044).Received
20050607,received in revised form 20060123
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