通过Weibull理论探讨了缺陷类型对SiC纤维抗拉强度与直径关系的影响,并通过对国产KD型SiC纤维抗拉强度与直径关系的分析得出了控制纤维力学性能的主要缺陷类型为内部缺陷.根据纤维断口镜面分析得出:表面缺陷控制的纤维力学性能较低,内部缺陷控制的纤维力学性能较高,国产SiC纤维的镜面常数约为2.4 Mpa·m0.5.
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