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首页> 外文会议>Second International Symposium on Adhesive Joints: Formation, Characteristics and Testing Vol.2 May 22-24, 2000 Newark, New Jersey >X-ray diffraction investigation on the fatigue behavior of a transversely loaded carbon fiber reinforced composite
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X-ray diffraction investigation on the fatigue behavior of a transversely loaded carbon fiber reinforced composite

机译：X射线衍射研究碳纤维增强复合材料的横向疲劳性能

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摘要

A unidirectional continuous carbon fiber reinforced epoxy composite was subjected to a cyclic stress in the direction perpendicular to the fiber direction. The applied stress was transferred to the incorporated fiber through the matrix. This stress causes a strain in the crystalline regions of carbon fiber, which appeared as the shift in the equatorial X-ray diffraction peak position. The stress on the incorporated fiber was calculated by multiplying the crystal strain and the crystal modulus of inter-graphite networks. We propose here a novel technique "X-ray Diffraction Method" to detect the stress on the incorporated fiber in the composite under a transverse load in situ and non-destructively, and discuss the stress transfer from microscopic point of view. The adhesion between the matrix and the fiber was found to play an important role for the transverse reinforcement of the composite.
机译：单向连续碳纤维增强环氧复合材料在垂直于纤维方向的方向上经受循环应力。施加的应力通过基体转移到结合的纤维上。该应力在碳纤维的晶体区域中引起应变，该应变表现为赤道X射线衍射峰位置的偏移。通过乘以石墨间网络的晶体应变和晶体模量来计算掺入纤维上的应力。我们在此提出一种新颖的技术“ X射线衍射法”，以在原位和无损横向载荷下检测复合材料中掺入纤维的应力，并从微观角度讨论应力转移。发现基质和纤维之间的粘合对于复合材料的横向增强起重要作用。

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