変動荷重下における溶接割れに対する実験的考察(平成元年度秋季全国大会論文発表講演論文)

概要

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In recent years, bridge and highways have been occasionally damaged because of increased in the volume of traffic and/or the gross weights of vehicles, and therefore it has been often become neccesary to perform welding for repair and reinforcement work, if possible in daytime without traffic control. In this study, the welding crack by the pulsating load in bridge under service condition was studied under the welding crack test by the pulsating load, the trans-varestraint test for weld metal and the high temperature tensile test for weld metal. The following main results were obtained ; 1) The welding crack by pulsating load is hot crakcs in solidification-liquid mixed and solidification, and often occur due to external strain caused by pulsating load. 2) The welding crack in solidification occurs more than about 1100℃. 3) The critical loading strain of welding crack are follows ; D4316,D5816 : About 1% in solidification-liquid mixed D4316 : About 2% in solidification D5816 : About 3% in solidification
社団法人溶接学会の論文
1989-08-05