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권석진(S.J.Kwon),서정원(J.W. Seo),허현무(M.H.Hur),권성태(S.T.Kwon) 한국정밀공학회 2005 한국정밀공학회 학술발표대회 논문집 Vol.2005 No.10월
The service demands of railway vehicles have become severe in recent years due to a general increase in operating speeds. It is very important to evaluate the fracture mechanics characteristics with respect to high-speed train wheel. In the present study, fracture mechanics characterization tests were carried out in accordance with various wheel materials. The result shows that fracture mechanics characteristic should be considered in the design code of the wheel materials.
윤성철(S. C. Yoon),백광선(K. S. Baik),권성태(S. T. Kwon),김명룡(M. Y. Kim) 한국정밀공학회 2004 한국정밀공학회 학술발표대회 논문집 Vol.2004 No.10월
This paper describes the result of structure analysis of body structure. The purpose of the analysis is to evaluate an safety which body structure shall be considered fully sufficient rigidity so as to satisfy proper system function under maximum load and operating condition. Material of body structure applied an aluminum alloy. Body structure consist of side frame, under frame, roof frame, end frame. FEM analysis is based on "Performance Test Standard for Electrical Multiple Unit, noticed by Ministry of Construction & Transportation, in 2000" and reference code is JIS E 7105. The analysis results have been very safety and stable for design load conditions.
서정원(J. W. Seo),권성태(S. T. Kwon),권석진(S. J. Kwon),이동형(D. H. Lee) 한국도시철도학회 2014 한국도시철도학회논문집 Vol.2 No.2
Rolling contact fatigue and wear of rails are inevitable problems for railway system due to wheel and rail contact. On straight track, the wheel tread is in contact with the rail head. However, In curves, especially, large sliding on the contact patch occurs at the wheel tread and flange. Due to this sliding, wear increases in the wheel/rail contact under the dry condition. In order to develop new materials and predict wear. It is important to understand the wear mechanism in rail steels. In this study, we have investigated wear characteriscs of rail steel using twin disc testing.