Accumulated damage process of thermal sprayed coating under rolling contact by acoustic emission technique

doi:10.1007/s11465-016-0395-9

Frontiers of Mechanical Engineering

2016, Vol. 11

Issue (3): 227-232 https://doi.org/10.1007/s11465-016-0395-9

本期目录

Accumulated damage process of thermal sprayed coating under rolling contact by acoustic emission technique

Jia XU¹,Zhen-yu ZHOU¹,Zhong-yu PIAO^2,^*(

)

¹. Key Laboratory of Special Purpose Equipment and Advanced Processing Technology (Zhejiang University of Technology), Ministry of Education and Zhejiang Province, Hangzhou 310014, China
². Key Laboratory of Special Purpose Equipment and Advanced Processing Technology (Zhejiang University of Technology), Ministry of Education and Zhejiang Province, Hangzhou 310014, China; The State Key Laboratory of Fluid Power Transmission and Control, Hangzhou 310027, China

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Abstract：

The accumulated damage process of rolling contact fatigue (RCF) of plasma-sprayed coatings was investigated. The influences of surface roughness, loading condition, and stress cycle frequency on the accumulated damage status of the coatings were discussed. A ball-on-disc machine was employed to conduct RCF experiments. Acoustic emission (AE) technique was introduced to monitor the RCF process of the coatings. AE signal characteristics were investigated to reveal the accumulated damage process. Result showed that the polished coating would resist the asperity contact and remit accumulated damage. The RCF lifetime would then extend. Heavy load would aggravate the accumulated damage status and induce surface fracture. Wear became the main failure mode that reduced the RCF lifetime. Frequent stress cycle would aggravate the accumulated damage status and induce interface fracture. Fatigue then became the main failure mode that also reduced the RCF lifetime.

Key words： accumulated damage spray coating rolling contact fatigue acoustic emission

收稿日期: 2016-04-07 出版日期: 2016-08-31

Corresponding Author(s): Zhong-yu PIAO

引用本文:

. [J]. Frontiers of Mechanical Engineering, 2016, 11(3): 227-232.
Jia XU,Zhen-yu ZHOU,Zhong-yu PIAO. Accumulated damage process of thermal sprayed coating under rolling contact by acoustic emission technique. Front. Mech. Eng., 2016, 11(3): 227-232.

链接本文:

https://academic.hep.com.cn/fme/CN/10.1007/s11465-016-0395-9
https://academic.hep.com.cn/fme/CN/Y2016/V11/I3/227

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