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利用线弹性断裂力学对表面裂纹和浅埋裂纹的边界干涉效应进行考察,结果表明,在缺陷失效评定规范中,采用a/t≤0.7和p/a≤0.8来分别作为表面裂纹和浅埋裂纹的再表征指标是合适的,具有一定安全裕量。
The linear elastic fracture mechanics is used to investigate the boundary effect of surface cracks and shallow cracks. The results show that a / t≤0.7 and p / a≤0.8 are used as the surface crack and shallow crack respectively The re-characterization index is appropriate, with a certain safety margin.