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本文基于理论和试验分析,得到了一个以度量半椭圆表面裂纹的参数—当量尺寸—表述的表面裂纹柔度标定公式。这一分析结果定量地描述了表面裂纹的扩展行为,并得到了测定LD10铝合金板表面裂纹韧度的估算公式。
Based on the theoretical and experimental analysis, this paper presents a formula for measuring the surface crack compliance of a semi-elliptical surface crack with parameter-equivalent dimensions. The results of this analysis quantitatively describe the behavior of surface crack propagation and obtained the estimation formula of surface crack toughness of LD10 aluminum alloy plate.