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맞대기 용접 강판재에서 압연 및 잔류응력에 의한 피로거동Fatigue Behavior with Respect to Rolling and Residual Stress in Butt-welded Steel Plate
- Other Titles
- Fatigue Behavior with Respect to Rolling and Residual Stress in Butt-welded Steel Plate
- Issue Date
- 2006
- Publisher
- 대한기계학회
- Keywords
- Welding Residual Stress Distribution(용접잔류 응력분포); Rolling Directional Characteristic(압연방향특성); Butt-Jointed Steel Plate(맞대기용접강판); Welded Material(용접재료); Stress Ratio(응력비); Welding Direction(용접방향); Tensile Loading Direction(인장하중방향); Fatigue Crack Propagation Rate(피로균열 진전속도)
- Citation
- 대한기계학회논문집 A, v.30, no.7, pp.826 - 832
- Journal Title
- 대한기계학회논문집 A
- Volume
- 30
- Number
- 7
- Start Page
- 826
- End Page
- 832
- ISSN
- 1226-4873
- 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˚ to 90˚, 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˚ and 90˚ respectively, fatigue crack propagation rate in welded material is lowest.
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