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J Weld Join > Volume 32(2); 2014 > Article
Journal of Welding and Joining 2014;32(2):163-168.
DOI: https://doi.org/10.5781/JWJ.2014.32.2.37    Published online May 14, 2014.
A Study of the Thickness Effect using Structural Stress Approach for Fillet Welded Joints
Wen-Jie Xin*, Dong-Jin Oh*, Myung-Hyun Kim*
Correspondence:  Myung-Hyun Kim,
Email: kimm@pusan.ac.kr
Abstract
In this study, non-load-carrying fillet welded joints fabricated using EH grade-steel are evaluated with the structural stress approach. The thickness effect was investigated by a study on welded steel joints with thickness ranging from 25 to 80mm. As-welded joint for main plate thickness of 25 to 80mm, the fatigue strength is reduced gradually. On the other hand, in case of main plate thickness of 25 to 80mm, the structural stress concentration factor increases gradually. As a result, for structural stress approach, thickness effect is not required for correction. Based on these results, a new evaluation fillet welded joint for fatigue design purposes has been proposed FAT 125.
Key Words: Thickness effects, Fatigue strength, Structural stress approach, Fillet joint


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