Modeling matrix multicracking development of fiber-reinforced ceramic-matrix composites considering fiber debonding

被引：15
作者：
Li, Longbiao [1 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Coll Civil Aviat, Nanjing, Jiangsu, Peoples R China
来源：
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2019年 / 16卷 / 01期
关键词：
ceramic-matrix composites (CMCs); interface debonding; matrix multicracking; TENSILE BEHAVIOR; CRACKING; FRACTURE; FAILURE; STRENGTH; DAMAGE;
D O I：
10.1111/ijac.13068
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 paper, the effect of fiber debonding on matrix multicracking development of different fiber-reinforced CMCs is investigated using the micromechanical approach. The Budiansky-Hutchinson-Evans shear-lag model is adopted to analyze the fiber and matrix stress distributions of the damaged composite. The fracture mechanics approach is used to determine the fiber/matrix interface debonding length. Combining the critical matrix strain energy criterion and fracture mechanics fiber/matrix interface debonding criterion, the stress-dependent matrix multicracking development is analyzed for different fiber volume fraction, fiber/matrix interface properties and matrix cracking characteristic stress. The experimental matrix multicracking development of unidirectional C/Si3N4, SiC/Si3N4, SiC/CAS, SiC/CAS-II, SiC/SiC, SiC/Borosilicate and mini-SiC/SiC composites are predicted.
引用
收藏
页码：97 / 107
页数：11
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