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多层连接碳纤维纬编双轴向衬纱织物增强复合材料的层间剪切性能

Keywords: 复合材料,纬编双轴向多层衬纱织物,聚合物基复合材料,剪切性能,失效机理

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Abstract:

?研究了三层连接、四层连接、五层连接的碳纤维纬编双轴向多层衬纱织物增强复合材料在0°和90°方向的层间剪切性能,结果表明:随着纤维体积含量的增加其层间剪切强度提高。复合材料的层间剪切载荷-挠度曲线趋于线性变化,达到最大值后载荷突然下降,表现出脆性断裂的特征。层间剪切试样断口形貌的分析结果表明,增强体结构对复合材料的层间剪切性能有显著的影响,试样的剪切破坏形式是分层破坏,在各织物组之间产生的裂纹较多。

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