Fork failure of a forklift truck mainly takes a form of plastic deformation exceeding allowable limit, fragile breakage and early stage fatigue breakage.

叉车货叉失效方式主要表现为塑性变形超差，脆性断裂和早期疲劳断裂。

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The results indicate that particle breakage depends on the sample′s plastic work received during testing, and reduces the volume expansion and peak strength of the sands.

结果表明，颗粒破碎程度与对其输入的塑性功密切相关；颗粒破碎的发生使钙质砂剪胀性减小，体积收缩应变增大，峰值强度降低。

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Both fibers feature plastic cladding to protect the fiber during buffer stripping and prevent breakage, while increasing fiber strength and reducing static fatigue in humid environments.

这两种纤维都具有塑料覆盖，在缓冲条剥落期间保护光纤，防止断裂，同时提高纤维强度和减少在潮湿环境中的静态疲劳。

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