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An integrated environmental and cost assessment method based on LCA and LCC for automobile interior and exterior trim design scheme optimization

  • LIFE CYCLE SUSTAINABILITY ASSESSMENT
  • Published:
The International Journal of Life Cycle Assessment Aims and scope Submit manuscript

Abstract

Purpose

This paper provided an integrated method to evaluate environmental impact and life cycle cost (LCC) of various alternative design schemes in the early design and development stages of complex mechanical product; an optimization method of product design schemes based on life cycle assessment (LCA) and LCC is proposed as a supporting design tool to achieve optimal integration of environmental impact and cost of the design.

Methods

The applied research methods include product level deconstruction model, LCA/LCC integrated analysis model, and the product design scheme optimization method. In the life cycle environmental assessment, GaBi software and CML2001 evaluation method are used to evaluate product environmental impact. In terms of product design configuration scheme optimization, the TOPSIS method is used to optimize the design schemes generated. Taking the internal and external trim of automobile as an example, the specific implementation process of the method is illustrated.

Results and discussion

The case study indicates that, when comprehensively considering the environmental impact and cost, the composite indices of the optimal and worst schemes are 0.8667 and 0.3001, respectively; their costs are ¥164.87 and ¥179.68, respectively; and the eco points of environmental impact are 14.74 and 39.78, respectively. The cost of the two schemes are not much different, but the environmental impact of the optimal scheme is only 37.1% of the worst scheme’s; When cost is the only factor to be considered, the lowest cost design scheme is about 36.7% of the maximum scheme’s cost, and the environmental impact of the lowest cost design scheme is about 1.6 times of the maximum cost scheme’s. When environmental impact is the only factor to be considered, the least environmental impact of design scheme accounts about 31.7% of the largest; the cost of design scheme with the least environmental impact accounts for about 58.1% of the largest one’s. Integrating LCA and LCC, scientific suggestions can be provided from several perspectives.

Conclusions

By considering the environmental impact and LCC, this paper proposes a method of product design scheme optimization as a supporting design tool which could evaluate the design options of the product and identify the preferred option in the early stage of product design. It is helpful to realize the sustainability of the product. In order to improve the applicability of this method, the weighting factors of environmental impact and cost could be adjusted according to the requirements of energy saving and emission reduction of different enterprises.

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Authors and Affiliations

  1. Hefei University of Technology, Hefei, 230009, People’s Republic of China

    Lei Zhang, Xinyu Li & Yongqiang Ren

  2. Key Laboratory of Green Design and Manufacturing of Mechanical Industry, Hefei University of Technology, Hefei, 230009, People’s Republic of China

    Wanfu Dong & Zhifeng Jin

Authors
  1. Lei Zhang
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  2. Wanfu Dong
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  3. Zhifeng Jin
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  4. Xinyu Li
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  5. Yongqiang Ren
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Correspondence to Lei Zhang.

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Responsible editor: Wulf-Peter Schmidt

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Zhang, L., Dong, W., Jin, Z. et al. An integrated environmental and cost assessment method based on LCA and LCC for automobile interior and exterior trim design scheme optimization. Int J Life Cycle Assess 25, 633–645 (2020). https://doi.org/10.1007/s11367-019-01691-x

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  • DOI: https://doi.org/10.1007/s11367-019-01691-x

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