If the failure is defined as the final fracture of a component, then both S-N curves and crack growth rate curves reflect the fundamental material behavior under fatigue loading.

如果都把一个构件的最终断裂作为疲劳破坏的定义，则S - N曲线和裂纹扩展率曲线均是反映金属在疲劳载荷作用下的基本材料特性。

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These fundamental solutions may be applied to linear elastic fracture analysis and consequently they provide a new and effective approach to solve this kind of problem.

这些基本解可以用于线弹性断裂分析，为求解这类问题提供了新的有效途径。

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According to the phenomena of the fracture of compacted soils, the fundamental concepts of fracture mechanics are introduced.

本文从填土断裂破坏的现象出发，介绍了断裂力学的基本概念。

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