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Study of strength and its reliability of SiC fiber bundle by experimental and Monte-Carlo simulation approach

机译：用实验和蒙特卡罗模拟方法研究SiC纤维束的强度及其可靠性

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Tensile tests and Monte-Carlo simulation on the strength and its reliability of the SiC_(CVD) (formed by chemical vapor deposition) fiber bundle were performed. The experimental and simulation results were compared and analyzed by fiber bundle strength theories. The experimental results showed that the strength of the SiC_(CVD) fiber bundle was decreased as the number of fibers in the bundle was increased; while in the process, Weibull shape parameter of the bundle strength was increased. The experimental results were in good agreement with the Monte-Carlo simulation. In addition, Monte-Carlo simulation was used to clarify the detailed relationship between the strength of the SiC_(CVD) bundle and the number of fibers in the bundle and the simulation results were compared with that of Coleman theory. The comparison revealed that the strength of the SiC_(CVD) bundle converged to the value of Coleman theory as the number of fibers in the bundle increased; at the same time, the rate of convergence was increased as Weibull shape parameter was increased. Furthermore, the relationship between the strength of the SiC_(CVD) fiber bundle and Weibull shape parameter of the SiC_(CVD) fiber strength was also examined. It was found that the strength of the SiC_(CVD) fiber bundle increased as Weibull shape parameter was increased although the number of fibers in the bundle was countable. Finally, the breaking-down process and the number of broken-fibers in the bundle depended on the number of fibers the bundle and Weibull shape parameter of the SiCcvD fiber strength.
机译：对SiC_（CVD）（由化学气相沉积形成）纤维束的强度及其可靠性进行了拉伸试验和蒙特卡洛模拟。通过纤维束强度理论对实验和仿真结果进行了比较和分析。实验结果表明，随着纤维束数量的增加，SiC_（CVD）纤维束的强度降低。在此过程中，增加了束强度的威布尔形状参数。实验结果与蒙特卡洛模拟结果吻合良好。另外，通过蒙特卡罗模拟来阐明SiC_（CVD）束强度与束中纤维数量之间的详细关系，并将模拟结果与Coleman理论进行了比较。比较表明，随着束中纤维数量的增加，SiC_（CVD）束的强度收敛到Coleman理论的值。同时，随着威布尔形状参数的增加，收敛速度增加。此外，还研究了SiC_（CVD）纤维束的强度与SiC_（CVD）纤维强度的威布尔形状参数之间的关系。发现尽管威伯形状参数增加，SiC_（CVD）纤维束的强度却增加，尽管束中的纤维数量是可数的。最后，纤维束的分解过程和纤维断裂的数目取决于纤维束的数目和SiCcvD纤维强度的威布尔形状参数。

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