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Study on Single-fiber Pull-out Method for Evaluating Interfacial Strength in CFRP

机译：CFRP界面强度单纤维拉拔法研究

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摘要

Single-fiber pull-out testing (SFPOT) methods are frequently used to evaluate the interfacial adhesion between fiber and matrix in composite materials. To make such pull-out measurements , however, the length of embedded fiber must be small enough so that the fiber does not break before it is pulled freely. This is difficult to achieve by conventional methods with fibers of small diameter, such as the carbon fibers. In this paper, a fiber pull-out experiment is described. Specialized apparatus in our laboratory, as well as this technique for sample preparation are discussed in detail. The interfacial shear strength of carbon fiber/resin matrix composites is analyzed quantitatively by using the finite- element method. The SFPOT system has been proved to be an available means for the study of interfacial properties for carbon fiber/resin matrix composites.
机译：单纤维拉出试验（SFPOT）方法通常用于评估复合材料中纤维与基质之间的界面粘合力。但是，要进行此类拉出测量，埋入式光纤的长度必须足够小，以使光纤在自由拉动之前不会断裂。用常规方法用小直径的纤维如碳纤维很难做到这一点。在本文中，描述了光纤拉出实验。详细讨论了我们实验室中的专用设备以及该样品制备技术。碳纤维/树脂基复合材料的界面剪切强度通过有限元方法定量分析。事实证明，SFPOT系统是研究碳纤维/树脂基复合材料界面性能的有效手段。

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