天然丝织/环氧复合管的吸能性能研究

Ude Au, Azhari Ch
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引用次数: 2

摘要

研究了家蚕天然丝纤维/环氧树脂复合材料圆柱形管在轴向准静态压缩下的吸能响应和承载性能。采用芯棒辅助手铺技术制备复合材料管。管是用24层蚕丝纤维制成的,用环氧基浸湿。然后将管分别切成50mm, 80mm和120mm的不同长度。每个类别测试三个标本。通过测量最大峰值载荷(Pmax)、比吸收能量(SAE)和总吸收能量(TE)与管长的关系,对实验结果进行了分析。研究结果显示,结果会随着试管长度的变化而发生不可预测的变化。利用高分辨率相机对试验过程中获得的照片进行了破坏破碎分析,结果表明压缩载荷引起的微裂纹是主要的破坏来源。
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On The Energy Absorption of Natural Woven Silk/Epoxy Composite Tube
In this study the energy absorption response and load carrying capability of Bombyx mori (B. mori) natural silk fibre/Epoxy composite cylindrical tubes under an axial quasi-static compression was investigated. The composite tubes were prepared using mandrel assisted hand lay-up technique. The tube was fabricated using 24 layers of B. mori natural silk fibre, fully wetted with epoxy matrix. The tube was then cut into varied lengths of 50 mm, 80 mm, and 120 mm, respectively. Three specimens were tested in each category. The experimental results were analysed by measuring maximum peak load (Pmax), specific absorbed energy (SAE), and total energy absorption (TE) as a function of tube length. Findings show results being varied according to tube length in unpredictable manners. Failure fragmentation of the tubes was analysed from photographs obtained during the test using high resolution camera, which showed micro cracks induced by compression load as the predominant source of failure.
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