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Masato Inoue
Meiji University
Decision Sciences, Operations Research & Management Engineering Environmental Science Industrial & Manufacturing Engineering Transportation

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An Upgradable Product Design Method for Improving Performance, CO2 Savings, and Production Cost Reduction: Vacuum Cleaner Case Study Masato Inoue; Shuho Yamada; Tetsuo Yamada; Stefan Bracke
International Journal of Supply Chain Management Vol 3, No 4 (2014): International Journal of Supply Chain Management (IJSCM)
Publisher : International Journal of Supply Chain Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (13.159 KB)

Abstract

Customers often discard products without considering the environmental load, because of the deterioration of their value even though they are fully functional. An upgradable product design can enhance the product value and stop the entire product replacement and disposal by replacing only the components responsible for the decrease in value. This paper proposes an upgradable product design method for improving product performance, incurring CO2 savings, and production cost reduction while increasing the product value and extending the value lifespan by exchanging components closely related to the deterioration in value. In addition, this paper proposes a method that can specify future product performance, effective upgradable product components, and the effect of the upgrade on other product components. Finally, this paper discusses the applicability of the proposed method by considering the designing of a vacuum cleaner and customer demands such as performance, noise, and energy savings.
Quantitative Estimate of CO2 Emission Reduction from Reuse of Automobile Parts in Japan Masato Inoue; Sota Takahashi; Mitsunobu Fujita; Takao Mori; Motohiro Tamaki; Shigeyuki Suzuki; Akihiro Hayakawa
International Journal of Supply Chain Management Vol 6, No 4 (2017): International Journal of Supply Chain Management (IJSCM)
Publisher : International Journal of Supply Chain Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (13.161 KB)

Abstract

In general, reusing automobile parts reduces not only the cost of replacing the failed parts but also the environmental load of manufacturing new parts. However, these effects have not yet been quantified. The present study focuses on determining the emitted CO2 during production and quantitatively evaluating its reduction by the reuse of automobile parts. First, CO2 emissions are calculated during the reused parts production process at the factory site. Thirty-nine automobiles from 27 models prepared in Japan are examined to measure the amount of CO2 emitted in the production of new parts. Furthermore, the CO2 emission reduction effect for different automobile models is estimated through multiple regression analysis. The CO2 emissions are assumed to be the objective variable, whereas the explanatory variables are derived from the data provided in the automobile inspection certificates. The presented quantitative estimate of CO2 emission reduction owing to the exploitation of reused parts is expected to promote policies for further reducing CO2 emissions and arouse public awareness regarding the benefits of recycling automobile parts.
Co-Authors Akihiro Hayakawa Mitsunobu Fujita Motohiro Tamaki Shigeyuki Suzuki Shuho Yamada Sota Takahashi Stefan Bracke Takao Mori Tetsuo Yamada