Advanced Composite Materials ( IF 2.9 ) Pub Date : 2020-09-27 , DOI: 10.1080/09243046.2020.1824145 Garam Kim 1 , Yuwei He 1 , Swapneel Kulkarni 2 , Ronald Sterkenburg 1
Aramid fiber composites that are used in aircraft can be exposed to various fluids from inside and outside the aircraft during maintenance and flight operations. This article investigates how the aircraft fluid affected the tensile properties, including ultimate tensile strength, tensile modulus, and strain at break of aramid fiber composites. Two different types of aramid fiber composite test specimens were prepared; Kevlar® laminate (para-aramid) and Nomex® paper (meta-aramid). The test specimens were soaked in four different types of aircraft fluid, jet fuel, engine oil, hydraulic fluid, and water and tested to measure their tensile properties. The influence of fluid ingression on the test specimens was analyzed by comparing the test data of each fluid group to the control group. Digital image correlation (DIC) was used during the tensile test for strain calculation and better understanding of local strain change during the test. The test results showed that the test specimens soaked in hydraulic fluid and water had an evidence of tensile property change.
中文翻译:
飞机流体侵入对芳纶纤维复合材料拉伸性能的影响
用于飞机的芳纶纤维复合材料在维护和飞行操作过程中可能会接触到来自飞机内外的各种流体。本文研究了飞机流体如何影响芳纶纤维复合材料的拉伸性能,包括极限拉伸强度、拉伸模量和断裂应变。制备了两种不同类型的芳纶纤维复合材料试样;Kevlar® 层压板(对位芳纶)和 Nomex® 纸(间位芳纶)。将试样浸泡在四种不同类型的飞机流体、喷气燃料、发动机油、液压油和水中,并进行测试以测量它们的拉伸性能。通过比较各流体组与对照组的测试数据,分析流体进入对试样的影响。在拉伸测试期间使用数字图像相关 (DIC) 进行应变计算,并更好地了解测试期间的局部应变变化。测试结果表明,浸泡在液压油和水中的试样有拉伸性能变化的迹象。