Prediction of brittle fracture initiating at ends of CJP groove welded joints with defects: study into applicability of failure assessment diagram approach

Tsutomu Iwashita, Yoshiaki Kurobane, Koji Azuma, Yuji Makino

doi:10.1016/j.engstruct.2003.08.005

Prediction of brittle fracture initiating at ends of CJP groove welded joints with defects: study into applicability of failure assessment diagram approach

DOI Web Site Web Site 被引用文献6件

書誌事項

公開日: 2003-12

権利情報

https://www.elsevier.com/tdm/userlicense/1.0/

DOI

10.1016/j.engstruct.2003.08.005

公開者: Elsevier BV

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説明

A series of tests, which reproduced brittle fracture starting from the region around the terminations of complete joint penetration groove welded joints, was conducted. The joint models under study represented a portion of welded beam flange-to-through diaphragm joints in beam-to-column connections. Various artificial weld defects were installed in the welded joints prior to testing. Test results were evaluated based on the failure assessment diagram approach specified in BS 7910. The conventional failure assessment diagrams predicted occurrences of brittle fracture erring on the very conservative side as expected, especially when applied to surface defects. The failure assessment diagram approach was modified by considering the effect of enhanced apparent toughness of material due to the loss of crack tip constraint. The modified failure assessment approach was found to predict the test results well.