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

4 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 ).

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
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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