The damage during hydraulic fracturing mainly included clay swelling and grain migration, built up created by mechanical impurities, the damage of fracture conductivity and so on.

水力压裂过程中存在的损害主要包括粘土膨胀与颗粒运移损害、机械杂质引起堵塞损害、支撑裂缝导流能力的损害等。

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Interface breakage will be the main fracture mechanism if the interface bonding is weak because of the damage during the composites preparation.

在复合材料中由于制备工艺或后期损伤导致的弱结合界面，界面破坏为主要的复合材料破坏机制。

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Fatigue damage estimation of the tendons was made using fracture mechanics approach, establishing the fracture crack growth rate model and limit state equations for failure modes.

疲劳寿命的计算采用断裂力学方法，建立疲劳裂纹扩展模型和失效模式的极限状态方程。

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The locomotive and the next two vehicles travel over the fracture point without coming to harm but the HSE can tell from damage caused to the underside of the coaches that the rail had already started to disintegrate.

BBC: Hatfield: The accident in detail