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차성운(Cha Sung Woon),김대은(Kim Dae-eun),이수홍(Lee Soo-hong),이경수(Lee Kyung Soo),김민수(Kim Minsoo) 한국공학교육학회 2007 공학교육연구 Vol.10 No.4
현재 대학의 공학교육은 산업계 수요를 반영한 인재 양성에 적합한 교육을 하고 있지 못한 것이 현실이 며, 이에 대한 극복을 위하여 대학과 정부에서는 새로운 교육모델의 개발을 위하여 많은 노력을 하고 있다. 본 연구는 공학에서 가장 중요한 분야 중 하나인 설계분야에 적합한 현장 적응형 인재를 양성하기 위한 공학설계 교육의 방향을 살펴보는데 있다. 설계기술역량과 ABEEK의 학습성과 문항을 설문 문항으로 이용하여 산업체, 교수 그리고 학생의 입장에서 창의설계프로젝트 (3)라는 공학설계 교육을 어떻게 바라보는지 비교, 분석하여 공학설계 교육의 방향을 제시하였다. 이를 위해 휴대전화 업체의 기구설계 분야의 전문가들을 통해 설계자가 설계업무 수행을 위해서 반드시 갖추어야할 필수 역량인 설계기술역량 3요소를 선정하였 다. 또, 이 3요소에 기반한 교수의 교육목표, 학생의 학습성과 그리고 산업체에서 생각하는 교육방향을 도출하고, 이를 비교 분석한 결과 창의설계프로젝트 (3)의 공학설계 교육이 산업체의 설계분야 요구사항을 유사하게 반영하고 있음을 확인하였다. that current engineering education is insufficient to cultivate engineers who can fulfill industrial demands. Engineering colleges and the government have expended much effort to develop new education model to overcome these shortcomings. The purpose of the present research is to formulate direction of engineering design education to cultivate talented engineers meeting engineering and industrial needs. We compared and analyzed Creative Design Project (3) (a core subject in engineering design) from the feedback of practising engineers, professors and students based on essential design technology factors and the educational achievement contents of ABEEK. The three essential factors of design technology which are prerequisites for the designers to implement design work were selected by surveying experts in the field of device design of cellular phone company. Moreover, educational purpose of the professors, educational achievement of the students, and educational direction of industry needs are deduced based on the three factors. It is also ascertained that Creative Design Project (3) meets most of the requirements of industrial design field by comparing and analyzing deduced results.
차성운(Sung Woon Cha),김민수(Min Soo Kim),이경수(Kyung Soo Lee) Korean Society for Precision Engineering 2006 한국정밀공학회지 Vol.23 No.5
Design structure of a mobile phone has been changed to a converged style, which has so many functions. However, the converged mobile phone could not satisfy the users who want to use only specific functions, so with Axiomatic Design, we have studied for making a proposal to set up the new concept. The goal of this study is to derive a general solution with Axiomatic Design to verify the Independence. By enhancing the existing design model and differentiating the function of mobile phone, user will be able to choose desirable products, which have only specific functions and/or specific parts. First of all, we checked the Independence about the existing design model. Then, we developed the new design model with the idea that base mobile phone should have basic functions and additional functions can be separated, surely be connected when users want.
차성운(Sung Woon Cha),김학빈(Hak Bin Kim),윤재동(Jae Dong Yoon),이윤성(Yoon Sung Lee) Korean Society for Precision Engineering 2005 한국정밀공학회지 Vol.22 No.6
Nowadays, the companies use polymer materials for many purposes for they have many advantages. The costs of these materials take up too high a proportion of the overall cost of products that use these materials as their major material. It is advantage for polymer industries to reduce these costs. The microcellular foaming process was developed in the early 1980s to solve this problem and proved to be quite successful. Microcellular foaming process uses inert gases such as CO₂, N₂. As these gases solve into polymer matrices, many properties are changed. The microcellular foaming process makes the glass transition temperature of polymers to low, and diminish the residual stress of polymer matrices. Besides, the microcellular foaming process has several merits, impact strength elevation, thermal insulation, noise insulation, and raw material saving etc. In previous research, many facts of microcellular foaming process are founded its characteristics. But previous researcher found the characteristics of microcellular foaming process with pure gas, for example CO₂, N₂ and so on, they did not found the characteristics of microcellular foaming process with one more gases. If one more gases inlet the resin, the characteristics of microcellular foaming process is changed very amazingly. In this paper, discuss on the characteristics of microcellular foaming process with gas cocktail about cell morphology.
차성운(Sung Woon Cha),김학빈(Hak Bin Kim),이병희(Byoung Hee Lee),강연준(Yon Jun Kang) Korean Society for Precision Engineering 2008 한국정밀공학회지 Vol.25 No.9
Microcellular foaming plastics create a sensation at polymer industrial for lowering product costs and overcoming a lowering of mechanical intensity. Among many advantages, microcellular foaming plastics is well known to have a good acoustical properties. This research based on the experiment of sound absorption and transmission characteristics inquire into acoustical properties of microcellular foaming plastics. Difference of transmission loss of microcellular foaming plastics and solid materials was defined as cell effect. Also, cell effect is expressed by sound reflection and sound absorption. This study is expected to fundamental research to present economical, functional alternative plan for products using sound absorption and transmission materials.
성갑제(Kapje Sung),차성운(Sung Woon Cha),문용락(Yongrak Moon) 한국자동차공학회 2002 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2002 No.5_3
Microcellular foamed plastics exibit better mechanical characteristics in impact strength, fatigue life, and thermal insulation because of its micro-cell morphology. And its cells<br/> influences its sound insulation efficiency. Ventilating, Heating, and Air Conditioning system of automobiles manufactured plastic materials are major factors that cause the inside noise of<br/> automobiles. This paper presents noise absorbtion efficiency of microcellular foamed plastics and efficiency of the adaption microcellular foamed plastics to the Ventilating, Heating, and Air Conditioning system of automobiles.