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Fractographic study of damage mechanisms in fiber reinforced polymer composites submitted to uniaxial compression

机译:纤维增强聚合物复合材料损伤机制的Fretography研究,提交给单轴压缩

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摘要

After the advances of microscopic techniques, the literature shows an increasing number of fractographic studies of fiber reinforced polymer composites. However, the fractographic aspects of compressive failures remain slightly explored and poorly enlightened. In this context, the purpose of this work is to present some of the main mechanisms responsible for the fracture energy absorption in the case of fiber reinforced polymer composites submitted to compressive loads. To do so, this study used an extensive literature review in addition to fractographic studies of textile carbon fiber/epoxy composite laminates, which were manufactured using prepreg scraps from the manufacturing waste of aeronautical industry. It was possible to identify the main damage mechanisms which occur in compressive failures of fiber reinforced polymer composites, namely microcracking, crack bridging, protrusions (not commonly reported in the literature) and fiber microbuckling leading to kink-band formation. Thus, we intend to contribute to a better understanding of the compressive behavior of polymer composites as well as of the resulting fractographic aspects.
机译:在微观技术进步之后,文献显示了越来越多的纤维增强聚合物复合材料的分接型。然而,压缩失败的法式方面仍然略微探索,灵活差。在这种情况下,本作作品的目的是展示负责纤维增强聚合物复合材料的裂缝能量吸收负责的一些主要机制。为此,本研究除了纺织碳纤维/环氧复合层压板的Fretography研究之外还使用了广泛的文献综述,这些复合层压板使用预浸料碎屑制造了来自航空工业的制造废物。可以识别纤维增强聚合物复合材料的压缩故障,即微裂纹,裂纹桥接,突起(文献中的常见报道)和纤维微桥接的主要损伤机制,导致扭结带形成。因此,我们打算有助于更好地理解聚合物复合材料的压缩行为以及所得到的地形方面。

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