Estimation of the fatigue life according to lap joint weld profiles for ferritic stainless steel
✍ Scribed by Jaesong Kim; Kyungmin Lee; Boyoung Lee
- Publisher
- Elsevier
- Year
- 2011
- Tongue
- English
- Weight
- 587 KB
- Volume
- 10
- Category
- Article
- ISSN
- 1877-7058
No coin nor oath required. For personal study only.
✦ Synopsis
Steel structures such as ships, ocean structures, automobile, aircraft and bridges should be designed and manufactured to be able to endure under various environmental conditions such as static load, impact, fatigue and torsion etc. Especially, many researches about improvement of fatigue strength have been performed in relation to welding to be used for connection of steel structures. In case that welded structures were applied cyclic fatigue load, the factors such as profile of weld bead, direction and size of applied load, welding residual stress and undercut have affected fatigue life. Generally, if curvature radius of welding(r) toe and welding as welded, shape(such as gap size, lap length) of lap joint is more affect than welding toe and angle on the stress value. In this study, fatigue strength for the ferritic stainless steel was evaluated through stress analysis using finite element method and fatigue test according to the lap length and gap size. In addition, to remove notch effect or stress concentration effect in the lap joint area, fatigue strength was evaluated by welding as the full penetration condition.