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首页> 外文期刊>Journal of Materials Engineering and Performance >Measurement of In-Plane Shear Strength of Carbon/Carbon Composites by Compression of Double-Notched Specimens
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Measurement of In-Plane Shear Strength of Carbon/Carbon Composites by Compression of Double-Notched Specimens

机译：通过双缺口试样压缩测量碳/碳复合材料的平面内剪切强度

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摘要

The compression of a double-notched specimen was used to determine the in-plane shear strength (IPSS) of a carbon/carbon composite in the paper. The effects of the notch distance (L), thickness (T), and notch width (W) and supporting jig on the IPSS of the double-notched specimens were investigated numerically and experimentally. The fracture surfaces were examined by a scanning electron microscope. It was found that the IPSS varied with L. Thin specimen yielded low strength. W has little effect on IPSS. The main failure modes include the matrix shear cracking, delamination, fracture and pullout of fibers or fiber bundles. Meanwhile, a supporting jig can provide lateral support and prevent buckling, therefore lead to the failure in a shear mode.
机译：使用双缺口样品的压缩来确定纸中碳/碳复合材料的面内剪切强度（IPSS）。数值和实验研究了缺口距离（L），厚度（T），缺口宽度（W）和支撑夹具对双缺口试样的IPSS的影响。用扫描电子显微镜检查断裂面。发现IPSS随L而变化。薄样品产生低强度。 W对IPSS的影响很小。主要破坏方式包括基体剪切开裂，分层，断裂和纤维或纤维束的拉出。同时，支撑夹具可提供侧向支撑并防止屈曲，因此导致剪切模式下的破坏。

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