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조영환 ( Younghwan Cho ),김관배 ( Kwanbae Kim ) 한국산업디자이너협회 2019 산업디자인학연구 Vol.13 No.2
This study examined upcycling, which is a kind of megatrend in the 21st century, abandoned bicycles recognized as social problems, and developed upcycling products using waste bicycles. The design for the environment is the biggest problem of modern society and it has raised the importance of sustainable design and upcycling. The sustainable design industry is getting highlighted worldwide. It is necessary to develop upcycling products as a way to solve abandoned bicycles that are recognized as social problems. As a research method, we looked at the theoretical consideration of upcycling and the current status of upcycling brands both at home country and abroad, and looked for the trends and values of upcycling and applied them to products. The status of abandoned bicycles was investigated through statistics and articles, suggesting the importance of the problem and the necessity of upcycling. After examining the types and characteristics of bicycles and organizing morphological characteristics by type, the structure of bicycles and characteristics of each part were summarized. We divided the functional classification of the bicycle into a frame, steering wheel, driving system, wheel, and then looked at the shape of parts belonging to each classification and parts that can be used for upcycling. We produced up-cycling products that maximize the use of bicycles that are discarded by making one product for each category. Through this study, we aim to improve the social awareness of resource circulation and upcycling by presenting new utilization plan of an abandoned bicycle.
Step-time 개념과 전달경로분석법을 이용한 법규 소음 소음원 기여율분석 및 개발
김기성(Kisung Kim),이세진(Sejin Lee),강화익(Hwaik Kang),안상도(Sangdo Ahn),조영환(Younghwan Cho) 한국자동차공학회 2014 한국자동차공학회 학술대회 및 전시회 Vol.2014 No.11
In case of pass-by-noise test the distance between noise source and response is changing because the source and response are separated. Step-time concept is introduced to correct the time-varying acoustic transfer function for airborne noise transfer path analysis. In this study, contribution of noise source was pinpointed and noise reduction is confirmed by reduction source level.