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이현철(Lee, Hyunchol),권기문(Kwon, Kimun),조영훈(Jo, Yeonghun) 한국방재학회 2017 한국방재학회논문집 Vol.17 No.3
암반사면을 안전하고 효과적으로 해석하기 위해서 암반의 역학적 특성을 면밀하게 조사해야 한다. 하지만 클리노미터를 사용한 절리조사의 한계점으로 인해 이를 보완한 새로운 측정법의 연구가 필요하다. 본 연구에서는 절리방향의 기하학적 특성을 분석하기 위해 절리의 방향성을 현장에 효율적으로 적용할 수 있는 절리조사 시스템을 개발하였다. 개발된 시스템은 하드웨어와 해석 소프트웨어로 구분된다. 하드웨어는 암반 절리 방향성을 측정하는 측정모듈, 측정자료를 전송하는 전송모듈로 구성되었다. 소프트웨어는 측정모듈을 통해 얻은 자료로부터 절리의 방향성을 분석하기 위해 개발하였으며 Arduino Joint Orientation Survey System로 명명하였다. 개발된 시스템을 접근이 어려운 지역 등 조사자가 측정할 수 없는 경우의 현장적용성이 뛰어나며 실내시험결과인 절리의 방향성을 효과적으로 분석할 수 있었다. Mechanical Properties of rock to Rock Slope as a safe and effective interpretation should be thoroughly investigated. Clinometer, however, new complements this new measurement due to the restrictions of the research for the joint is needed. In this study, geometric characteristics of the joint orientation to analyze the joint orientation of efficiently developing a joint survey system that can be applied to the field. The system is developed and Analysis software to hardware. Hardware is bedrock to measure the joint orientation of measuring module, measuring the transfer of data transfer module. From the software is measuring module from the data to analyze the orientation of the joint development, and arduino joint orientation survey system named. Can not be measured by the investigation, including regional development approach is a system that has been difficult if the Field Application of the lab test results of the joint orientation and effectively.
자동차 측면 충돌 시 도어트림 SHARP EDGE 해석 신뢰성 향상 연구
박은정(Eunjung Park),남종현(Jonghyun Nam),이현철(Hyunchol Lee),박현민(Hyunmin Park),윤성연(Sungyun Yoon),김종수(Jongsoo Kim) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
As the demand for car impact performance has been strengthened, Accordingly door trim assembly for the side impact test methods have been developed. For The automotive-parts manufacturers delivery the door trim assembly parts to car-maker, it is necessary result of the side impact test. So we use the CAE analysis method for the forecasting the behavior of sharp edge occurrence. the most biggest problem of current CAE Analysis method is the CAE analysis behavior of hot stacking boss mounting is different with real testing result. In order to improve this paper analytically for the fusing boss screws and techniques for assembling structures and discuss the effect on the structure of the improved analysis conducted by the interpretation of the actual vehicle mass production scheduled improvements.
도어트림 SHARP EDGE 예측을 위한 SEMI-SLED 시험법 연구
조현권(Hyunkwon Jo),박운진(Unjin Park),김종수(Jongsoo Kim),이현철(Hyunchol Lee),박현민(Hyunmin Park),강두안(Dooan Kang) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
More recently, safe regulations have been strengthened globally as the importance of automobile passenger safety has increased. This is especially true for car side impact accidents.mas they can cause serious injury due to the narrow space between the car interior and the passenger. To prevent this, a lot of automobile manufacturing companies conduct tests on a full-scale Car Side Impact for development period before regulation certification test. However in many cases the results don’t satisfy the safety regulations and standards, which then additional tests. Furthermore, the test is very expensive. In this paper, we propose a reliable testing methodology to pre-evaluate Door Trims for the chance of sharp edges occurring after impact, and show how to resolve the problem if it occurs before full-scale Car Side Impact test. This research leads to exact prediction of Door Trim sharp edge as full-scale Car Side Impact test.