Fatigue Life Estimation of $CO^2$ Gas Arc Welded Carbon Steel Tubes

$CO^2$ 가스 용접된 강관파일의 피로수명 평가

In this study. the fatigue lives of two kinds of specimens made by $CO^2$ gas weld were assessed. The materials for two kinds of specimens were taken out of the virgin carbon steel tubes and the used carbon steel tubes respectively. As a result, it was found that the fatigue lives of two groups of specimens were in the same order of magnitude.