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Publications
Wang, Yd., Fang, Z.H., Zhou, X.D., Liu, J., Ling, R., Xu, S.H. and Garbatov, Y. (2025), The effect of corrosion on the fretting fatigue performance of friction-type high-strength bolted connections, International Journal of Fatigue, Vol. 198, 108987.
This comprehensive study investigates the effect of corrosion on the fretting fatigue performance of friction-type high-strength bolted connections (FHBC). The research involved pre-corroded connecting plates and insufficiently tightened bolts, with anti-sliding coefficient measurement and fretting fatigue tests conducted. The results revealed mild corrosion increased the anti-sliding coefficient and load, while excessive corrosion reduced both. The fretting fatigue life of corroded FHBC was significantly improved, with some cases showing over 5 times increase. Fretting fatigue cracks appeared at a certain distance from the loading-side edge of the bolt hole on the connecting plate interface on both corroded and uncorroded specimens. However, corrosion pits could cause multiple macroscopic cracks to propagate simultaneously. A numerical simulation method was proposed to predict the fretting fatigue crack initiation and propagation life of FHBC based on the multiaxial fatigue damage model and the crack propagate criterion. The effects of corrosion-induced bolt preload loss, anti-sliding coefficient increase, corrosion pits and rust layers at the connecting plate interface, and the fretting fatigue performance of FHBC were systematically studied. The results indicated that crack initiation life accounted for over 60% of the total fatigue life. The rust layer at the interface reduced the fretting wear by causing indirect contact between the surfaces, which was the primary factor in the extended fretting fatigue life. Furthermore, the fretting fatigue crack propagation life was primarily determined by the life before the crack penetrates, with corrosion having minimal effect on the fretting fatigue crack propagation life, crack tip stress intensity factor distribution, and crack propagation path of FHBC.
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