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A Study on the Low Temperature Mechanical Characteristics of SM490A for the Railroad Vehicle Structure  

Kang, K.W. (체육과학연구원, 스포츠산업실)
Goo, B.C. (한국철도기술연구원, 철도시스템안전연구본부)
You, W.H. (한국철도기술연구원, 철도시스템안전연구본부)
Kim, J.H. (한국철도기술연구원, 철도시스템안전연구본부)
Publication Information
Journal of the Korean Society for Railway / v.9, no.6, 2006 , pp. 695-700 More about this Journal
Abstract
This study investigates the effects of the material properties and the fatigue behavior in the SM490A material specimens due to the low-temperature atmosphere. In the fatigue behavior, the low-temperature affects the fatigue life. As the temperature get low, the fatigue limit increase, also As the yield strength and the tensile strength increase, the impact absorbed energy decrease. The difference of fatigue lift represents to normal distribution and it is larger between the room temperature and the low temperature, but in the result of the cumulative density function, the effect of temperature is not too large on it.
Keywords
Low temperature; Fatigue life; Mechanical properties;
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