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Selection of an optimized method for pitting processes with sustainability as an important factor
Ryuichi Saitoh,Hiroki Yamakiri,Tsuneo Kurita,Shinsuke Kondoh,Nozomu Mishima,Shinya Sasaki 대한기계학회 2010 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.24 No.1
Recent engineering products must meet the demand for downsizing and sophistication. Environmentally benign manufacturing has also become a key technology for sustainable development. Striking a balance between product quality and environmental impact in manufacturing processes has become an important issue in the design of eco-friendly products. However, despite this increasing demand from the industry, there is dearth of research on the environmental impact of processing as compared to studies on conventional manufacturing factors such as cost and time. We have tried to clarify the relationship between quality and environmental impact directly from experimental data. The pitting process that we chose as our experimental process is one of the most general and important processes in the industry. In this paper, we discuss a basic concept for selecting optimal processing methods and conditions for the pitting process from the aspect of employing an environmentally benign process. By applying our study to the industry, engineers can easily conduct processes that are not only high in quality but also low in environmental impact.
Chun, Yoon-Young,Lee, Kun-Mo,Lee, Jong Seok,Lee, Joo Young,Lee, Min Hyeok,Mishima, Nozomu,Tahara, Kiyotaka Elsevier 2018 JOURNAL OF CLEANER PRODUCTION Vol.198 No.-
<P><B>Abstract</B></P> <P>This study set out to address the challenges on the tool related barriers that limit ecodesign implementation. The challenges are allowance of multi-objective analysis, inclusion of life cycle perspective, and linkage with economic aspects. This was achieved by proposing a consumer-oriented ecodesign index (CEDI) and a producer-oriented ecodesign index (PEDI) as a method to identify the target components of a product for ecodesign, using the water purifier case study. These indices consider factors including environmental impact, utility value, and life cycle cost of a product. From the life cycle perspective, costs, and environmental impacts of the water purifier and its components were converted into a monetary value. Product utility values were calculated based on the total performance index method. To quantify the utility value of the water purifier, consumer preference for each function, and the decrease in the value of the functional performance of the product, were investigated. The compressor and hot water tank assemblies were two key components for ecodesign, each having relatively high potential environmental risks for the manufacturer of the water purifier. From the consumer's perspective, filters related to removing VOCs, heavy metals, and odor need to be redesigned to meet consumer expectation on product quality. The proposed indices can be further used as an evaluation tool for design alternatives for ecodesign.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Consumer- and producer-oriented ecodesign indices were proposed. </LI> <LI> These indices consider environmental impact, utility value, and life cycle cost. </LI> <LI> The proposed indices identify the target components of a product for ecodesign. </LI> </UL> </P>