Study of random fatigue behavior of C/SiC composite thin-wall plates

Zengewn Wu, Jun Liang*, Maoqing Fu, Guodong Fang, Zhengong Zhou

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

17 引用 (Scopus)

摘要

As an alternative method of acoustic experiment, vibration tests of C/SiC thin-wall plates were conducted to study the random fatigue behavior. The vibration specimen was clamped with cantilever boundary and subjected to limited-bandwidth vibration excitation. The strain history and fundamental frequency of the specimens were monitored during the vibration test. It was found that the measured strain value and strain amplitude value accorded with Gauss and Rayleigh distribution, respectively. The fundamental frequency decreased greatly when the vibration specimen failed, which could be recognized as failure criterion for the specimen under random loading. The microscopic fracture morphologies showed that the majority failure mode of fibers in the longitudinal and transverse directions were fiber pull-out and fiber splitting, respectively. The tensile force induced by reversed bending load is the main driving force for damage in specimen.

源语言英语
页(从-至)553-561
页数9
期刊International Journal of Fatigue
116
DOI
出版状态已出版 - 11月 2018

指纹

探究 'Study of random fatigue behavior of C/SiC composite thin-wall plates' 的科研主题。它们共同构成独一无二的指纹。

引用此