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Research Papers: Friction & Wear

Investigation on Frictional Vibration Behavior of Tribological Pairs Under Different Wear States

[+] Author and Article Information
Di Sun

Marine Engineering College,
Dalian Maritime University,
No. 1 Linghai Road,
Dalian 116026, Liaoning, China;
Marine Engineering College,
Jimei University,
Xiamen 361021, China
e-mail: sundi6329@sina.com

Guobin Li

Marine Engineering College,
Dalian Maritime University,
No. 1 Linghai Road,
Dalian 116026, Liaoning, China
e-mail: guobinli88@163.com

Haijun Wei

Marine Engineering College,
Dalian Maritime University,
No. 1 Linghai Road,
Dalian 116026, Liaoning, China;
Merchant Marine College,
Shanghai Maritime University,
Shanghai 200135, China

Haifeng Liao

Marine Engineering College,
Jimei University,
Xiamen 361021, China

Ting Liu

Marine Engineering College,
Dalian Maritime University,
No. 1 Linghai Road,
Dalian 116026, Liaoning, China

1Corresponding author.

Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received July 17, 2014; final manuscript received December 22, 2014; published online February 5, 2015. Assoc. Editor: Mircea Teodorescu.

J. Tribol 137(2), 021606 (Apr 01, 2015) (7 pages) Paper No: TRIB-14-1173; doi: 10.1115/1.4029485 History: Received July 17, 2014; Revised December 22, 2014; Online February 05, 2015

In this paper, the frictional vibration behavior under different wear states was investigated by the friction and wear experiments of the piston ring against the cylinder liner of marine diesel engine on CFT-I tester. The time-frequency features of frictional vibration were analyzed by harmonic wavelet packet transform (HWPT) and the variation of frictional vibration from running-in wear to steady wear and violent wear states was studied by defining characteristics parameter K using singular value decomposition (SVD). The result shows that the time-frequency features of frictional vibration vary with the wear time and can reflect the wear states of tribological pairs. The variation of characteristic parameter K of the frictional vibration is accordingly consistent with that of the friction coefficient and indicates that the wear progress of the tribological pair goes through various stages, namely, running-in wear, steady wear, and violent wear. Therefore, the frictional vibration can be used to predict the wear process and identify the wear states of tribological pairs.

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References

Figures

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Fig. 1

Schematic diagram of CFT-I wear tester. (a) Experiment device and (b) tribological pair.

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Fig. 2

Frequency domain distribution map of HW packet decomposition

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Fig. 3

Waveform and spectrum diagram of vibration signal. (a) Waveform diagram (4 min), (b) spectrum diagram (4 min), (c) waveform diagram (100 min), (d) spectrum diagram (100 min), (e) waveform diagram (200 min), (f) spectrum diagram (200 min), (g) waveform diagram (300 min), and (h) spectrum diagram (300 min).

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Fig. 4

Waveform and spectrum diagram of vibration signal in range of 5000–6000 Hz. (a) Waveform diagram (4 min), (b) spectrum diagram (4 min), (c) waveform diagram (100 min), (d) spectrum diagram (100 min), (e) waveform diagram (200 min), (f) spectrum diagram (200 min), (g) waveform diagram (300 min), and (h) spectrum diagram (300 min).

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Fig. 5

Waveform and maximum value diagram of vibration signal in range of 5000–6000 Hz. (a) Waveform diagram and (b) maximum value diagram.

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Fig. 6

Temporal variation of characteristic parameter K of vibration signal in the range of 5000–6000 Hz

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Fig. 7

Temporal variation of the friction coefficient μ

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Fig. 8

The 3D roughness of worn surface of cylinder liner specimen

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