Temperature-dependence of acoustic fatigue life for thermal protection structures

Autor: Yadong Zhou, Shaoqing Wu, Zhiyong Tan, Qingguo Fei
Jazyk: angličtina
Rok vydání: 2014
Předmět:
Zdroj: Theoretical and Applied Mechanics Letters, Vol 4, Iss 2 (2014)
Druh dokumentu: article
ISSN: 2095-0349
DOI: 10.1063/2.1402105
Popis: Acoustic fatigue life evaluation is essential for thermal protection structures due to the severe thermo-acoustic load in service. A study on temperaturedependence of acoustic fatigue life for a C/SiC panel is presented in this paper. Effects of temperature on both the structural responses and the S-N curves are investigated. The Dirlik method is adopted to predict the fatigue life of a C/SiC panel at three different temperatures respectively. Significant differences are observed from the results of numerical simulations between the fatigue lives of the panel in the three cases. The temperature-dependence of acoustic fatigue life of a C/SiC panel is verified, and fatigue test of the material needs to be more attentively performed.
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