【摘要】 对由ＬＢ５２ＮＳ焊条施焊的Ａ１３１和Ａ５３７钢的焊接接头进行了动态撕裂（ＤＴ）试验．以研究焊缝金属强度匹配对裂纹扩展特性的影响结果表明，在接近ＮＤＴ温度时．两种接头的动态撕裂能（ＥＤＴ）没有显著差别；但在较高的温度．较高强度匹配的焊缝是有利的，对试验数据的统计分析表明．动态撕裂能ＥＤＴ和剪切面积百分比Ｓａ均服从正态分布规律。更多还原

【Abstract】 In order to study the effeCt of weldmatching on the crack propagating behaviour the comparative DT tests have been done on the butt joints of A131 and A537 steels welded with the same kind of the electrode LB52NS. From test results it is apparent that there was no significant difference in EDT(Dynamic Tear Energy) at temperature closed to NDT for the two kinds of welded joints. however at higher temperature. the beneficial effect of weldmatching in higher degree was found. From the statistics analysis it has been shown that either the ED. or the S. conforms with normal distributions.更多还原