Micro-XCT-based finite element method for predicting the elastic modulus of needle carbon-fiber-reinforced ceramic matrix composites

被引：7

作者：

Gao, Xiguang ^{[1
]}

Luo, Piaoyang ^{[1
]}

Fang, Guangwu ^{[1
]}

Zhang, Sheng ^{[1
]}

Song, Yingdong ^{[1
,2
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Energy & Power Engn, Jiangsu Prov Key Lab Aerosp Power Syst, Nanjing 210016, Jiangsu, Peoples R China

[2] Nanjing Univ Aeronaut & Astronaut, Coll Energy & Power, State Key Lab Mech & Control Mech Struct, Nanjing 210016, Jiangsu, Peoples R China

来源：

SCIENCE AND ENGINEERING OF COMPOSITE MATERIALS | 2017年 / 24卷 / 01期

基金：

中国国家自然科学基金;

关键词：

elastic modulus; finite element method; micro-XCT; needle ceramic matrix composites; MULTIPHASE; BEHAVIOR;

D O I：

10.1515/secm-2014-0276

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

In this study, a finite element method was developed based on X-ray computer tomography to predict the elastic modulus of needle carbon-fiber-reinforced ceramic matrix composites with voids randomly existing in the material. In these pictures, every pixel point contains all of the information of the components that we need, including voids. Using this information, the mechanical properties of components can be obtained, then a finite element model with voids was built and the predicted results fit well with the experiments. In addition, a volume average method was developed to determine the proper representative volume element size to reduce the computing time without losing the accuracy.

引用

页码：1 / 11

页数：11

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