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Shape memory characteristics of woven glass fibre fabric reinforced epoxy composite in flexure

机译:玻璃纤维织物增强的环氧复合材料的挠曲形状记忆特性

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摘要

Shape memory characteristics of a woven glass fibre (GF) fabric reinforced epoxy composite (reinforcement content: 38 vol.%) were assessed in three point bending mode in a dynamic-mechanical analysis device and compared to those of the parent epoxy resin (EP). From unconstrained tests the shape fixity and recovery ratios and the recovery rate, whereas from constrained tests the recovery stress were determined. The shape fixity and recovery rate decreased due to the GF reinforcement which had, however, no effect on the shape recovery. Major benefit of the woven GF fabric wasudthat the recovery stress could be enhanced by two orders of magnitude in comparison to the neat EP. GF reinforcement was accompanied with a substantial decrease in the failure-free flexural deformability of the composite specimen.
机译:在动态机械分析装置中,以三点弯曲模式评估了玻璃纤维(GF)织物增强环氧复合材料(增强含量:38%体积)的形状记忆特性,并将其与母体环氧树脂(EP)的形状记忆特性进行了比较。 。从无约束的测试中,形状固定性和恢复率以及恢复速率,而从无约束的测试中,确定恢复应力。由于GF增强,形状固定性和恢复速率降低,但是对形状恢复没有影响。 GF机织织物的主要优点是与纯净的EP相比,恢复应力可以提高两个数量级。 GF增强伴随着复合材料试样无故障挠曲变形能力的显着降低。

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