Behaviour and mechanism of fatigue crack growth in aramid-fibre-reinforced styrene–butadiene rubber composites. (May 2020)

• Record Type: Journal Article
• Authors: Yin, Lianpeng; Luo, Zhu; Zhong, Jincheng; Yang, Bo; Ji, Yongchun
• Is Part Of: International journal of fatigue. Volume 134(2020)
• Publication Date: 2020-05
• Subjects: Aramid fibre -- Rubber composite -- Crack growth rate -- Fibre effect parameter; Materials -- Fatigue -- Periodicals; Materials -- Fatigue; Periodicals; 620.1122
• DOI: 10.1016/j.ijfatigue.2020.105502
• Languages: English
• ISSNs: 0142-1123

Abstract

Graphical abstract: Highlight: The effect of AF on crack growth for reinforced rubber/fiber composites was investigated. The fatigue crack growth experiment under variable fatigue strain loading was carried out. The fiber effect parameter α was introduced to analyze the effect of fiber. A mechanism for the effect of fibers attracting fatigue cracks was proposed. The effect of fibers attracting fatigue cracks is more prominent by AFs coated with VPL. Abstract: Aramid fibres (AF)/styrene–butadiene rubber (SBR) filled with carbon black (CB) exhibit different fatigue behaviours with changes in fatigue strain. A mechanism for the effect of the fibres attracting fatigue cracks in the process of crack growth was proposed. The fibre effect parameter, α, was calculated from the power law relationship between the crack growth rate and the tearing energy, to evaluate the comprehensive effect of the AFs on fatigue crack growth rate. Furthermore, the effect of the attraction of fatigue cracks by fibres with a good bonded flexible interface layer was more prominent, and the fatigue crack propagation could be effectively suppressed.