Fatigue strength improvement for weld root of sole plate by filling resin

Tamari, Jin

doi:10.1201/9780429279119-234

Cited by 1 publication

(1 citation statement)

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“…Previous studies [5][6][7] have confirmed that the assistance of adhesive bonding to fillet welding in cover plate joints has an effective impact on stress mitigation near the weld roots and also holds the possibility of improving fatigue life. As they mainly concentrated on the stress distribution, there was no confirmation whether they were still effective on actual structures.…”

Section: Introductionmentioning

confidence: 89%

Assistive Bonding Assisted Prevention of Weld Root Fatigue Cracks

Yifeia

Hirohata

Suzuki

et al. 2022

QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY

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Extending the service life of structures and decreasing the damage caused by fractures or deterioration are important. Previous studies have confirmed that adhesive-bonding-assisted-fillet-welding in cover plate joints has a positive impact on stress mitigation near weld roots and also presents a possibility for improving fatigue life. To investigate the effects of fillet welding combined with adhesive bonding on the fatigue life of weld roots in steel bridge members, several experiments were performed on the specimens, modelling the welds between the flange and the sole plate. The possibility of defect occurrence was reduced by inserting a heat-resistant rubber into the edge of the adhesive bond part of the specimen. A cyclic tensile stress was applied to the weld root of the specimen to generate fatigue cracks from the weld root. Compared with the only-weld specimens, the specimens with welding and bonding demonstrated evident stress mitigation and extension of fatigue life. In addition, the incomplete filling of the bond could possibly reduce the effect of fatigue life improvement.

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Section: Introductionmentioning

confidence: 89%