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http://dx.doi.org/10.3795/KSME-A.2006.30.7.826

Fatigue Behavior with Respect to Rolling and Residual Stress in Butt-welded Steel Plate  

Lee Yong-Bok (홍익대학교 기계.시스템디자인공학과)
Oh Byung-Duck (홍익대학교 대학원 기계공학과)
Kim Sung-Yeup (홍익대학교 대학원 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.30, no.7, 2006 , pp. 826-832 More about this Journal
Abstract
For the improvement of safety and endurance in welded steel structure, it is needed to consider welding residual stress distribution and rolling directional characteristics of materials. In this study, it was investigated experimentally about characteristics of fatigue crack propagation according to welding residual stress and rolling in FCAW(flux cored arc welding) butt-jointed steel plates. SS400 steel plates of 3mm thickness were selected and tested for this study. When the angles between tensile loading direction and rolling direction in welded materials are increased from $0^{\circ}\;to\;90^{\circ}$, their fatigue crack propagation rates are increased. These results are same as predicted increments of fatigue crack propagation rate when stress ratio is increased from 0 to 0.5. When the angles of rolling direction and welding direction to tensile loading direction are $0^{\circ}\;and\;90^{\circ}$ respectively, fatigue crack propagation rate in welded material is lowest.
Keywords
Welding Residual Stress Distribution; Rolling Directional Characteristic; Butt-Jointed Steel Plate; Welded Material; Stress Ratio; Welding Direction; Tensile Loading Direction; Fatigue Crack Propagation Rate;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
연도 인용수 순위
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