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전기차 내장 감성 조명용 CRASH PAD GARNISH BODY 제조기술에 관한 연구
전오환(Oh-Hwan Jeon),전상권(Sang-Kwon Jeon),김옥환(Ok-Hwan Kim),한수현(Su-Hyeon Han),최낙훈(Nak-Hun Choi) 한국산학기술학회 2023 한국산학기술학회논문지 Vol.24 No.4
본 논문은 전기차를 위한 감성 조명용 Crash Pad Garnish Body 부품을 사출할 때, 뒤틀림이나 휨이 적도록 하는 기술에 관한 것이다. 물성치 시험을 통하여 부품에 적절한 소재를 선정하였고, 이 재료를 적용하여 사출 유동 해석을 하였으며, 해석으로부터 유동 압력, 온도 분포, 각부의 변형 등의 사출 조건을 구하였다. 유동 압력은 게이트 입구에서 최대 압력 85.51MPa을 보이며, 온도 분포는 최고 온도는 중앙 하부와 우측 끝 부위에서 약 300℃이고, 좌측 부위는 270℃이었다. 해석한 결과를 토대로 시험용 부품과 그에 대한 금형을 설계하고 제작하였으며, 제작된 금형을 이용하여 시험 사출을 하고, 시험 사출된 제품을 검사하였다. 검사 내용으로 외관검사, 휨과 뒤틀림 변형량, 무게 검사를 하였으며, 검사를 통하여 시제품의 품질을 확인하였다. 또한, 최근 이슈되는 유해물질 검사를 통하여 환경적 문제 유무를 검토하였다. 그 결과 모든 항목이 적합함을 보였다. This paper reports a technology to reduce distortion or bending when injecting Crash Pad Garnish Body parts for emotional lighting for electric vehicles. Appropriate materials for the parts were selected through the physical properties test. Injection flow analysis was performed by applying these materials, and injection conditions, such as flow pressure, temperature distribution, and deformation of each part, were obtained from the analysis. The flow pressure showed a maximum pressure of 85.51 MPa at the gate entrance, and the temperature distribution was approximately 300°C at the lower center and the right end and 270°C at the left side. Test parts and molds were designed and manufactured based on the analysis results, and test injection was performed using the manufactured mold, and the test-injected products were inspected. As for the inspection contents, appearance inspection, amount of deformation of bending and distortion, and weight inspection were performed, and the quality of the prototype was confirmed through inspection. In addition, the presence or absence of environmental problems was reviewed through the recent hazardous substance inspection. The results showed that all items were adequate.
전오환(Ohwan Jeon),장익근(Ikkun Jang),김호종(HoJong Kim),지성호(Sungho Ji) 한국자동차공학회 2007 한국자동차공학회 지부 학술대회 논문집 Vol.- No.-
The main purpose of this study is to develop the new design system for side impact crash performance by using the 6 step creativity TRIZ theory. To reduce occupant injury, We had to find out a efficient method. In case of Side Impact Crash, We had Commonly using the polyurethane product as Impact absorption. But this products have many problems; environmental issue, imcrease in a unit cost, difficult in Design. But Airblow Impact Pad is solved these problems. However Airblow pad have a critical defect in shape-forming precess. The more imcrease height of airblow impact pad, the more thin of pad’s thickness. New design impact system that we studied is innovated to develop a doortrim’s pelvis impact pad composited doortim rib with airblow pad
조현권(Hyunkwon Jo),전오환(OhHwan Jeon),남종현(JongHyun Nam),송병철(ByungChul Song) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
Recently the automotive industry has focused on reducing product development time to correspond with the customer’s demands quickly changed. The decreased product development time shortens the quality assurance period which makes it difficult to guarantee the quality of product. Therefore the conflict between development time and quality assurance occurs that customer’s expect actually higher quality is higher than in the past. To solve this problem, many automotive companies have tried to forge a system that verifies the various steps of development in advance. In many case the larger automotive companies have employed a virtual validation system and the Digital Mock-Up (DMU) to help ensure quality control. Domestic car maker era have recognized the importance of virtual validation systems and introduce, build properly and deploy it. But domestic automotive supplier era have a problem with building the system because the software is very expensive, there are few experts, and the system often fails to meet a company’s individual needs. For these reason many suppliers fail to successfully implement quality assurance procedure and just do it formally. In this paper, to approve this problem, we introduce the virtual validation system designed specifically for supplier; build the process and show the case; present the results which show positive effect.
측면 Sled Test 평가를 통한 Door Trim이 복부하중에 미치는 영향 연구
윤영한(Younghan Youn),전오환(Ohwan Jeon),이현철(Hyunchul Lee),나형현(Hyunghyun Na),김영기(Youngki Kim) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.5_2
This paper describes the effectiveness armrest stiffness of door trim in abdomen forces by simple sled test method to simulate Korean side impact regulation. In this sled test, the door inner panel which was deformed in the full scale test was rigidly set on the sled, and impacted the dummy. Even if the sled moved in normal V-T profile used in HyGe sled facility, the dummy responses were correlated with full vehicle tests in order to study occupant protection practically. In the study of sled tests, the effects of door trim especially armrest are studied in terms of abdomen forces measured from EROSID abdomen 3 force sensors. In conclusion, it was found that the sled test with deformed door was a useful and efficient method to study for occupant protection.