The crashworthiness of a structure is a measure of its protective capability under dynamic events by absorbing the crash energy in a controlled way. Fiber reinforced composite materials can represent a valid alternative to ductile metals as impact energy absorbers in a crashworthy structure. In fact, composites are characterized by high mechanical properties coupled with low weight, capability to be designed by tailoring the specific requirements and good energy absorption capabilities. However, the impact resistance and the damage modes of long fiber composites involve different factors (constituent materials, geometry, lay up, manufacturing process) and are difficult to predict. In addition, there are no standard experimental procedures to assess the crashworthiness of composite materials. Therefore, a large and proper experimental characterization on composites with different geometries can be useful to understand the failure mechanisms under dynamic loads.

中文翻译：

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碳纤维增强环氧复合材料耐撞性实验表征


结构的耐撞性是衡量其在动态事件下以受控方式吸收碰撞能量的保护能力的指标。纤维增强复合材料可以作为延性金属的有效替代品，作为防撞结构中的冲击能量吸收器。事实上，复合材料的特点是机械性能高、重量轻、能够根据具体要求进行设计以及良好的能量吸收能力。然而，长纤维复合材料的抗冲击性和损伤模式涉及不同的因素（成分材料、几何形状、铺层、制造工艺）并且难以预测。此外，没有标准的实验程序来评估复合材料的耐撞性。因此，对不同几何形状的复合材料进行大量且适当的实验表征有助于了解动态载荷下的失效机制。