압연 및 용접방향이 같은 맞대기 용접강판의 하중방향에 따른 피로균열 진전특성Characteristics of Fatigue Crack Prepagations with Respect to Loading Directions in Butt-Welded Steel Plates with the Same Direction of Rolling and Welding Bead
- Other Titles
- Characteristics of Fatigue Crack Prepagations with Respect to Loading Directions in Butt-Welded Steel Plates with the Same Direction of Rolling and Welding Bead
- Authors
- 이용복; 김성엽; 오병덕
- Issue Date
- 2005
- Publisher
- 대한용접접합학회
- Keywords
- Rolling direction; Loading direction; Welding residual stress; Fatigue crack propagation; Base material; Welded material; Ultimate strength; Yielding strength; Elongation; Fatigue crack growth rate
- Citation
- 대한용접접합학회지, v.23, no.6, pp.37 - 42
- Journal Title
- 대한용접접합학회지
- Volume
- 23
- Number
- 6
- Start Page
- 37
- End Page
- 42
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/25337
- ISSN
- 2466-2232
- Abstract
- Most of the welding steel plate structures have complicated mechanical problems such as rolling directional characteristics and residual stresses caused by manufacturing process. For the enhancement of reliability and safety in those structures, therefore, a systematic investigation is required. SS400 steel plate used for common structures was selected and welded by FCAW butt-welding process for this study, and then it was studied experimently about characteristics of fatigue crack propagations with respect to rolling direction and welding residual stress of welded steel plates. When the angles between rolling direction and tensile loading direction in base material are increased, their ultimate strength not show a significant difference, but yielding strength are increased and elongations are decreased uniformly. It is also shown that fatigue crack growth rate can be increased from those results. When the angles between welding bead direction and loading direction in welded material are increase, fatigue crack growth rate of them are decreased and influenced uniformly according to the conditions of residual stress distribution. In these results, it is shown that the welded steel plate structures are needed to harmonize distributed welding residual stress, rolling direction and loading direction for the improvement of safety and endurance in manufacture of their structures.
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Collections - College of Engineering > Department of Mechanical and System Design Engineering > 1. Journal Articles
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