Representation of micro-structural evolution and thermo-mechanical damage in thermal shocked oxide/oxide ceramic matrix composites

被引：24

作者：

Yang, Zhengmao ^{[1
,2
]}

Yuan, Huang ^{[1
]}

Markert, Bernd ^{[3
]}

机构：

[1] Tsinghua Univ, Sch Aerosp Engn, Beijing, Peoples R China

[2] Beijing Inst Technol, Sch Mech Engn, Beijing, Peoples R China

[3] Rhein Westfal TH Aachen, Fac Mech Engn, Aachen, Germany

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2019年 / 126卷

关键词：

Ceramic matrix composite; Cyclic thermal shock; Micro-structural evolution; Thermo-mechanical damage; Porosity increment; OXIDE FIBERS; BEHAVIOR; FATIGUE; ENVIRONMENT; PLY;

D O I：

10.1016/j.ijfatigue.2019.04.030

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The oxide/oxide ceramic matrix composites display complex mechanical behavior under thermo-mechanical loading conditions. The present work focuses on micro-structural evolution and resultant macroscopic properties during cyclic thermal shocks. Micro-structural investigation reveals that variations of nano-, micro- and macro-pores in the matrix characterize collective behavior of micro-structural evolution in the material. Material damage development is characterized by micro-cracking in the matrix and can be described by the matrix porosity increment. The present investigation confirms the unique correlation between the porosity and the micro-structural degradation evolution of the material under different loading conditions.

引用

页码：122 / 129

页数：8

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