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首页> 外文期刊>Advanced Composite Materials: The Official Journal of the Japan Society of Composite Materials >A simple test method, NAL-II, to evaluate the strength and elastic modulus of polymer matrix composite laminates
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A simple test method, NAL-II, to evaluate the strength and elastic modulus of polymer matrix composite laminates

机译:一种简单的测试方法NAL-II,用于评估聚合物基复合材料层压板的强度和弹性模量

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摘要

This study proposes and assesses a simple test method (NAL-II) to evaluate compressive properties of carbon fiber-reinforced polymer matrix composite laminates (CFRP). Compressive tests based on ASTM D6641 and NAL-II methods were conducted for direct comparison using three kinds of quasi-isotropic composite laminates (T800H/3633, T800S/3900-2B, and IM600/133). Stress-strain curves including the compressive modulus obtained using the NAL-II method showed good agreement with those obtained using the ASTM D6641. The NAL-II method gave slightly higher (approximately 10%) compressive strengths than the ASTM D6641 method, probably because of suppression of bending (buckling) before failure. The experimentally obtained results suggest that the NAL-II method can be useful for international standard testing of the non-hole compressive strength of CFRP laminates.
机译:这项研究提出并评估了一种简单的测试方法(NAL-II),以评估碳纤维增强的聚合物基复合材料层压板(CFRP)的压缩性能。使用三种准各向同性复合材料层压板(T800H / 3633,T800S / 3900-2B和IM600 / 133),根据ASTM D6641和NAL-II方法进行了压缩试验,以进行直接比较。包含使用NAL-II方法获得的压缩模量的应力-应变曲线与使用ASTM D6641获得的应力-应变曲线显示出良好的一致性。 NAL-II方法提供的压缩强度比ASTM D6641方法略高(大约10%),这可能是由于抑制了失效前的弯曲(屈曲)。实验获得的结果表明,NAL-II方法可用于CFRP层压板的非孔抗压强度的国际标准测试。

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