... crack initiation 裂纹起始,裂纹形成 crack initiation site 裂纹起始位置 crack length 裂纹长度 ...
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fatigue crack initiation site 疲劳源
The results showed that nonmetallic inclusions in weld seam served as crack initiation site under external bend load, and large amount of m a structure resulted in cleavage fracture of weld seam.
结果表明,焊缝金属中存在的非金属夹杂物,在低应力作用下形成微裂纹成为裂源,加之焊缝组织中存在大量的M A结构群,从而发生焊缝金属在室温下的解理断裂。
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