研究发现，焊缝中存在的界面反应物、气孔缺陷，是导致该种材料焊接性显著降低的主要因素。
The results show that the defects in the weld such as interface reactant and pore are the key factors to reduce the material weldability.
在焊缝超声波探伤中应用断裂力学分析缺陷危害程度，以提高探伤结果的可靠性。
Fracture mechanics has been applied for harmfulness analysis of flaws in ultrasonic testing of welds in order to improve the reliability of testing results.
本课题研究了建筑钢结构熔透对接焊缝中缺陷当量的分析方法和非裂纹类缺陷对焊缝正常使用的影响。
The research focuses on the defect equivalent analytical methods in building steel structure butt weld fusion and the effects of non-crack-type defects on the normal use of butt weld fusion.
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