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首页> 外文会议>High temperature ceramic matrix composites 8 >AN EXPERIMENTAL INVESTIGATION ON SHEAR BEHAVIORS OF SINGLE-LAP FOUR-PIN 2D C/SIC JOINTS
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AN EXPERIMENTAL INVESTIGATION ON SHEAR BEHAVIORS OF SINGLE-LAP FOUR-PIN 2D C/SIC JOINTS

机译：单圈四针二维C / SIC接头剪切行为的实验研究

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摘要

This paper presents the shear behaviors of single-lap four-pin 2D C/SiC joints (pin joint) at room temperature. The load distribution among four pins was indicated by the strains on the top of each pin and it was proved to be a good method to characterize load distribution in symmetrical pin joints. Infrared thermograph showed the nonuniform load distribution among four pins was caused by matrix damage around holes. The average shear strength per pin was 113MPa approaching the in-plane shear strength of 2D C/SiC (125MPa). The shear test curves showed delay in load take-up because of microvoids in the pin/hole interfaces and pins. Microstructural observations showed that shear rupture of fiber tows was the main failure morphology of pin joint.
机译：本文介绍了单圈四针2D C / SiC接头（销接头）在室温下的剪切行为。每个销钉顶部的应变指示了四个销钉之间的载荷分布，这被证明是表征对称销钉接头中载荷分布的一种好方法。红外热像仪显示四个销钉之间的载荷分布不均匀是由于孔周围的基体损坏引起的。每个销的平均剪切强度为113MPa，接近2D C / SiC的面内剪切强度（125MPa）。剪切试验曲线表明，由于销/孔界面和销中的微孔，负载吸收延迟。显微组织观察表明，纤维束的剪切断裂是销钉接头的主要破坏形态。

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  • 来源
  • 会议地点 XIan(CN)
  • 作者

    Yi Zhang; Litong Zhang; Xiaoying Liu; Yongsheng Liu; Bo Chen;

  • 作者单位

    Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, West Youyi Rd., No. 127, Xi'an, Shaanxi 710072, PR China;

    Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, West Youyi Rd., No. 127, Xi'an, Shaanxi 710072, PR China;

    Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, West Youyi Rd., No. 127, Xi'an, Shaanxi 710072, PR China;

    Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, West Youyi Rd., No. 127, Xi'an, Shaanxi 710072, PR China;

    Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, West Youyi Rd., No. 127, Xi'an, Shaanxi 710072, PR China;

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