Modeling the temperature dependent ultimate tensile strength for unidirectional ceramic-fiber reinforced ceramic composites considering the load carrying capacity of broken fibers

被引：10

作者：

Zhang, Xin ^{[1
,2
]}

Li, Weiguo ^{[1
,2
]}

Deng, Yong ^{[1
]}

Li, Ying ^{[1
]}

Zhang, Xuyao ^{[1
]}

Zheng, Shifeng ^{[1
]}

Dong, Pan ^{[1
]}

Wang, Shubin ^{[1
]}

Zhang, Xi ^{[1
]}

Sheng, Zheng ^{[1
]}

Ma, Jianzuo ^{[1
]}

机构：

[1] Chongqing Univ, Coll Aerosp Engn, Chongqing 400044, Peoples R China

[2] State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2019年 / 45卷 / 18期

基金：

中国国家自然科学基金;

关键词：

Ultimate tensile strength; Temperature; Unidirectional ceramic-fiber reinforced ceramic composites; Broken fibers; Influencing factors analysis; MATRIX CRACKING STRESS; MECHANICAL-PROPERTIES; FIBER/MATRIX COMPOSITES; ELEVATED-TEMPERATURE; HEAT-TREATMENT; BEHAVIOR; DAMAGE; MICROSTRUCTURE; PREDICTION; OXIDATION;

D O I：

10.1016/j.ceramint.2019.08.145

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this study, considering the combined effects of the load carrying capacity of broken fibers and its evolution with temperature, a theoretical model for characterizing ultimate tensile strength of unidirectional ceramic-fiber reinforced ceramic composites (UCFRCCs) as a function of temperature is established. The model is verified by comparison with measurements available of temperature dependent ultimate tensile strength of UCFRCCs. Besides, on the basis of the established model, the quantitative influences of broken fibers and fiber Young's modulus on the ultimate tensile strength as a function of temperature are analyzed. The results show that the volume fraction of broken fibers and its strength contribution ratio at different temperatures are almost proportional to each other. Besides, the improvement of fiber Young's modulus at high temperatures is more conducive to enhancing the ultimate tensile strength of UCFRCCs. This study not only provides a powerful means to characterize the ultimate tensile strength, but also contributes to providing theoretical basis and guidance for the design and fabrication of UCFRCCs at various temperatures.

引用

页码：24309 / 24317

页数：9

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