This work presents an experimental study characterizing the crush performance of hollow cylindrical tubes made with prepreg platelet molding compound (PPMC). PPMC is a composite material system that uses platelets from chopped and slit unidirectional prepreg as the basis for a molding compound. This material system has a higher fiber volume fraction and better mechanical properties than traditional short fiber systems and can be molded into complex geometries unlike continuous fiber systems. As such, this material system shows promise for use with complex structural members in vehicles. The failure morphology and specific energy absorption of the material are evaluated with different thickness-to-diameter geometries and test speeds. In addition, this work investigates how PPMC components compare to traditional continuous fiber components and finds that PPMC performs as well as continuous fiber layups with similar effective laminate stiffnesses.

中文翻译：

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预浸料片状模塑料管抗压性能试验研究

这项工作提出了一项实验研究，表征了用预浸料片状模塑料 (PPMC) 制成的空心圆柱管的压碎性能。PPMC 是一种复合材料系统，它使用来自切碎和切割的单向预浸料的薄片作为模塑料的基础。这种材料系统比传统的短纤维系统具有更高的纤维体积分数和更好的机械性能，并且与连续纤维系统不同，可以模制成复杂的几何形状。因此，该材料系统有望与车辆中的复杂结构部件一起使用。材料的破坏形态和比能量吸收通过不同的厚度到直径的几何形状和测试速度进行评估。此外，