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
收藏
页码：122 / 129
页数：8
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