Life assessment of thermomechanical fatigue in a woven SiC/SiC ceramic matrix composite with an environmental barrier coating at elevated temperature

Zhengmao Yang, Wenhao Li, Yang Chen, Wu Zeng, Wenbo Chen, Xueqiang Cao

Research output: Contribution to journalArticlepeer-review

10 Citations (SciVal)

Abstract

In this work, the tension–tension fatigue behavior of a woven SiC/SiC ceramic matrix composite with an environmental barrier coating is investigated under elevated temperatures up to 1300 °C. Experimental investigations reveal the fatigue failure mechanism for SiC/SiC CMCs with EBCs under on-axis and off-axis loading conditions, and the materials undergo cyclic softening throughout the loading history. A mechanism-based framework is proposed to interpret the fatigue behavior of CMCs through detailed fatigue experiment observations. Based on the decrease in the elastic modulus of the composites, a new fatigue damage model is developed to characterize the fatigue damage evolution and assess the fatigue life of woven SiC/SiC CMCs with EBCs. The good agreement between the proposed model and experimental data indicates that the damage model has the potential to describe complex thermomechanical damage of SiC/SiC CMCs with EBCs under thermomechanical loading.

Original languageEnglish
Article number107584
JournalInternational Journal of Fatigue
Volume172
Issue numberJuly 2023
Early online date5 Apr 2023
DOIs
Publication statusPublished - 6 Apr 2023

Bibliographical note

Funding Information:
The present work is supported by the National Natural Science Foundation of China (NSFC) (Grant No. 52105165 , U2241238 ), and the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDA17030100 ).

Funding

The present work is supported by the National Natural Science Foundation of China (NSFC) (Grant No. 52105165 , U2241238 ), and the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDA17030100 ).

Keywords

  • Damage evolution model
  • Environmental barrier coating
  • High temperature fatigue behavior
  • Off-axis fatigue behavior
  • SiC/SiC ceramic-matrix composites
  • Thermomechanical fatigue

ASJC Scopus subject areas

  • Modelling and Simulation
  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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