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首页> 外文会议>Design and manufacturing of composites >In Situ Observation of Micro Damage under Tensile Load : Single Fiber, Fiber Bundle Woven Fabric
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In Situ Observation of Micro Damage under Tensile Load : Single Fiber, Fiber Bundle Woven Fabric

机译：拉伸载荷下微损伤的现场观察：单纤维，纤维束和机织织物

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摘要

This study describes about how the fiber surface treatments are affected on both mesoscopic damages, such as interfacial debonding and matrix cracking in the embedded single fiber or strand, and macroscopic ones, such as inter-bundle delamination of woven fabric composites. The damage observations have been carried out under two types of tensile testing: (1) tensile test into scanning electron microscope (in situ SEM observation) and (2) universal tensile test (in situ macro observation). Test specimens are vinyl ester resin matrix embedded by single filament or strand, and reinforced by laminated woven cloth. In order to investigate the effects of interfacial properties, each specimen was fabricated using three types of surface treated fiber. It was obvious that the interfacial properties were able to be evaluated by in situ observation of each failure process, such as interfacial debonding, crack linking, and crack propagation. The effect of the fiber surface treatment on damages has been revealed in each scale level, i.e., filament, strand, and woven fabric.
机译：这项研究描述了纤维表面处理如何对介观损伤（如包埋的单根纤维或线束中的界面剥离和基体开裂）以及宏观影响（如机织复合材料的束间分层）产生影响。损伤观察是在两种类型的拉伸试验中进行的：（1）扫描电子显微镜的拉伸试验（原位SEM观察）和（2）通用拉伸试验（原位宏观观察）。试样是用单丝或绞合线嵌入的乙烯基酯树脂基体，并用层压编织布加固。为了研究界面特性的影响，使用三种类型的表面处理纤维制造了每个样品。显然，可以通过现场观察每个破坏过程来评估界面性质，例如界面剥离，裂纹连接和裂纹扩展。纤维表面处理对损伤的影响已经在每个标度水平，即长丝，股线和机织织物上揭示出来。

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