Vibration fatigue life prediction method for needled C/SiC composite based on frequency response curve with low signal strength

被引：4
|
作者：
Wu, Shao-Dong [1 ]
Shang, De-Guang [1 ]
Zuo, Lin-Xuan [2 ]
Qu, Lin-Feng [2 ]
Hou, Geng [1 ]
Hao, Guo-Cheng [1 ]
Shi, Feng-Tian [1 ]
机构：
[1] Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
[2] Aviat Ind Corp China Ltd, Shenyang Aircraft Design & Res Inst, Shenyang 110035, Peoples R China
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2023年 / 168卷
基金：
中国国家自然科学基金;
关键词：
Needled C; SiC composite; Random vibration; Rayleigh model; S-N curve; Vibration fatigue life; DAMAGE ACCUMULATION; BEHAVIOR; FAILURE;
D O I：
10.1016/j.ijfatigue.2022.107407
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The experimental results show that needled C/SiC composite exhibits nonlinear stiffness characteristics in the process of vibration. In order to consider the effect of the number of fiber layers on the fatigue properties, the S-N curve related to the number of 0 degrees layer fibers for needled C/SiC composite is proposed in this investigation. According to the relationship between the frequency response curve and the signal strength, an amplitude probability density function under narrow band random vibrations was proposed for predicting the fatigue life for the notched plate specimen. The results showed that the proposed method has a good prediction effect.
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页数：10
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