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Effect of cryogenic aging on nanophased fiber metal laminates and glass/epoxy composites

机译：低温老化对纳米纤维金属层压板和玻璃/环氧复合材料的影响

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In this study, the idea of using fiber metal laminate (FML) for cryogenic applications has been proposed. Considering the cryogenic durability of 5,000 series of aluminum alloys, a novel FML based on the aluminum alloy 5083-H111 was successfully developed. The changes in the mechanical properties of the mentioned FMLs, as well as traditional plain weave E-glass/epoxy (GE) composites after exposure to cryogenic aging in LN2 at a temperature of -196 degrees C for 336 h was evaluated. In addition, an effort was made on improvement of the cryogenic durability of both laminate types by adding montmorillonite nanoclay particles into the polymeric matrix. The principal findings were the maximum flexural load, flexural stiffness, and impact strength of GE composites were negatively affected by cryogenic aging and decreased by 26.82, 5.13, and 14.06%, respectively, while these values for the aged FMLs were only 18.65, 4.54, and 9.56%, respectively. It was also found that the nanoclay could effectively improve the mechanical properties of both laminate types in pristine and aged conditions. This study can provide a preliminary guideline for the initial design of the cryogenic tanks based on FMLs. POLYM. COMPOS., 40:2523-2533, 2019. (c) 2018 Society of Plastics Engineers
机译：在这项研究中，已经提出了使用用于低温应用的纤维金属层压板（FML）的想法。考虑到5,000系列铝合金的低温耐久性，成功开发了一种基于铝合金5083-H111的新型FML。评估了在-196℃的温度下暴露于LN2的LN2后，在-196℃的LN2中暴露于低温老化后的FMLS的机械性能的变化，以及传统的平纹织物E-玻璃/环氧树脂（GE）复合材料。此外，通过将蒙脱石纳米粘土颗粒加入聚合物基质中，提高了改善两种层压材料的低温耐久性。主要调查结果是最大的弯曲载荷，抗弯曲刚度和GE复合材料的冲击强度，通过低温老化产生负面影响，并分别下降26.82,5.13和14.06％，而老年FML的这些值仅为18.65,4.54，分别为9.56％。还发现纳米粘土可以有效地改善原始和老化条件中的层压类型的机械性能。本研究可以根据FMLS提供基于FMLS的低温罐的初始设计初步准则。聚合物。 Compos。，40：2523-2533,2019。（c）2018年塑料工程师协会

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