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The assessment of the compressive strength of fibre metal laminates after low-velocity impact

机译:低速冲击后纤维金属层压板抗压强度的评估

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The aim of the work was to assess the compressive strength of Fibre Metal Laminates after impact. The main objective of the evaluation of the compression after impact assessment of FMLs was the deep analysis of damage growth range, size and mechanisms during load from various initial damage states and final post-impact strength. The glass fibre/titanium and carbon fibre/titanium Fibre Metal Laminates were tested and analysed. Laminates previously subjected to impact energies ranging from 5 to 35 J were tested. Based on the research, three load bearing states of fibre-metal laminates were identified and characterized on the basis of an analysis of force reduction characteristics. In addition, it was found that the strength reduction of FMLs in relation to impact energy does not decrease significantly. One of the most crucial grounds for the above is the protective role of the elastic-plastic metal layers against rapid local buckling of the strength-carrying composite component.
机译:这项工作的目的是评估金属纤维层压板在冲击后的抗压强度。FMLs冲击评估后压缩评估的主要目的是深入分析各种初始损伤状态和最终冲击后强度在载荷过程中的损伤增长范围、大小和机制。对玻璃纤维/钛和碳纤维/钛纤维金属层压板进行了测试和分析。测试了以前承受 5 至 35 J 冲击能量的层压板。在研究的基础上,在分析减力特性的基础上,鉴定并表征了纤维-金属层合板的3种承载状态。此外,还发现FMLs相对于冲击能量的强度降低没有显着降低。上述最关键的理由之一是弹塑性金属层的保护作用,防止承载强度的复合材料部件的快速局部屈曲。

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