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首页> 外文期刊>Materials Science Research International >Impact Damage Resistance of CFRP Laminate with Epoxy-Resin Surface Layer
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Impact Damage Resistance of CFRP Laminate with Epoxy-Resin Surface Layer

机译：环氧树脂表面层的CFRP层压板的耐冲击破坏性

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摘要

We investigated the effect of an epoxy surface layer to improve the impact damage resistance in carbon-fiber-reinforced-plastic (CFRP) laminate. The specimens were CFRP laminates covered on the impact face or the back face with a highly viscous epoxy resin. The thickness of the epoxy layer was 1.0 mm or 2.0 mm. Projectiles were launched from an air gun and impacted onto the laminates. The projectiles were made of silicone rubber or aluminum alloy. C-scan images obtained with a scanning acoustic microscope after the tests revealed that the damage mechanism for the CFRP laminates is independent of the surface-layer material and the material properties of the projectile. When we compared the contact area, the crack length on the back face and the delamination areas on each specimen, we found that the epoxy surface layer improved the impact damage resistance of the CFRP laminate. The epoxy surface layer on the impact face decreased the impact force transferred to the laminate, and that layer on the back face suppressed the generation and propagation of fiber-directional matrix cracking on the back face during impact.
机译：我们研究了环氧表面层改善碳纤维增强塑料（CFRP）层压板的抗冲击破坏性的作用。样品为CFRP层压板，其表面覆盖有高粘度环氧树脂，位于冲击面或背面。环氧层的厚度为1.0mm或2.0mm。弹丸从气枪中射出并撞击到层压板上。弹丸由硅橡胶或铝合金制成。测试后用扫描声显微镜获得的C扫描图像显示CFRP层压板的损坏机理与表面层材料和弹丸的材料特性无关。当我们比较接触面积，背面的裂纹长度和每个试样的分层面积时，我们发现环氧树脂表面层提高了CFRP层压板的抗冲击破坏性。冲击面上的环氧表面层降低了传递到层压板的冲击力，并且背面上的该层抑制了冲击过程中背面上的纤维方向基体裂纹的产生和传播。

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