期刊
COMPOSITE STRUCTURES
卷 259, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2020.113468
关键词
CFRP; MWCNTs; Three-point bending; Ultra-high cycle fatigue; Three-parameter Weibull distribution
资金
- National Natural Science Foundation [51835009]
Multi-wall carbon nanotubes significantly improve the anti-fatigue performance of carbon fiber reinforced plastics, ultimately extending their ultra-high cycle fatigue life. The three-parameter Weibull distribution function is more in line with the distribution characteristics of CFRP fatigue life data.
An uninterrupted constant amplitude ultrasonic three-point bending fatigue test was carried out on plain weave composites with different Multi-wall carbon nanotubes (MWCNTs) content. S-N curves under different reliability levels, Weibull distribution curves with different stress levels, and fatigue life survival probability distribution were plotted. MWCNTs were a kind of nano-particles that significantly improved the antifatigue performance of CFRP. It increased the interface strength of carbon fiber and epoxy resin and ultimately prolonged the ultra-high cycle fatigue life of CFRP. In addition, the three-parameter Weibull distribution function was more in line with the distribution characteristics of CFRP fatigue life data.
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