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陶瓷纤维束的真实强度：实验与模拟

True Strength of Ceramic Fiber Bundles: Experiments and Simulations.

作者信息

Neckel Leandro, Faller Cristian A, Babič Matej, Montedo Oscar R K, Bergmann Carlos P, Janssen Rolf

机构信息

Programa de Pós-Graduação em Engenharia de Minas, Metalúrgica e de Materiais-PPGE3M, Universidade Federal do Rio Grande do Sul-UFRGS, Av. Osvaldo Aranha, 99. Sala 711, 90035-190 Porto Alegre, Brazil.

Grupo de Pesquisa em Cerâmica Técnica-CERTEC, Universidade do Extremo Sul Catarinense-UNESC, Av. Universitária, 1105-P.O. Box 3167, 88806-000 Criciúma, Brazil.

出版信息

Materials (Basel). 2020 Dec 25;14(1):64. doi: 10.3390/ma14010064.

DOI:10.3390/ma14010064
PMID:33375641
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7796129/
Abstract

A study on the strength of ceramic fiber bundles based on experimental and computational procedures is presented. Tests were performed on single filaments and bundles composed of two fibers with different nominal fiber counts. A method based on fiber rupture signals was developed to estimate the amount of filament rupture during the test. Through this method, the fiber bundle true strength was determined and its variation with the initial fiber count observed. By using different load-sharing models and the single filament data as input parameter, simulations were also developed to verify this behavior. Through different approaches between experiments and simulations, it was noted that the fiber bundle true strength increased with the fiber count. Moreover, a variation of the fibers' final proportion in the bundles relative to the initial amount was verified in both approaches. Finally, discussions on the influence of different load-sharing models on the results are presented.

摘要

本文介绍了一项基于实验和计算程序对陶瓷纤维束强度的研究。对单丝以及由两种具有不同标称纤维数量的纤维组成的纤维束进行了测试。开发了一种基于纤维断裂信号的方法来估计测试过程中细丝断裂的数量。通过这种方法，确定了纤维束的真实强度，并观察到其随初始纤维数量的变化。通过使用不同的载荷分担模型并将单丝数据作为输入参数，还进行了模拟以验证这种行为。通过实验和模拟之间的不同方法，发现纤维束的真实强度随纤维数量的增加而增加。此外，在两种方法中都验证了束中纤维最终比例相对于初始数量的变化。最后，讨论了不同载荷分担模型对结果的影响。

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