ENHANCEMENT OF FATIGUE STRENGTH AT THE ROOT OF OUT-OF-PLANE GUSSET WELDED JOINT BY HIGH FREQUENCY INDUCTION HEATING TREATMENT
2025 Volume 32 Issue 127 Pages 72-82
Details
2025 Volume 32 Issue 127 Pages 72-82
In this study, the enhancement of fatigue strength at the weld root in out-of-plane gusset welded joint by high frequency induction heating (IH) treatment was investigated. Fatigue tests were conducted to examine the fatigue strength enhancement by IH treatment. IH treatment was applied to both sides of a boxing weld in the specimens. Test results show 1-grade or more fatigue strength enhancement while the fatigue cracks were generated both from weld root and weld toe in a longitudinal attachment. Additionally, finite element analysis was performed to investigate the fatigue strength enhancement based on effective notch stress. Two million cycle fatigue strength was improved 2.25 times than the welded joint without IH treatment.
