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http://dx.doi.org/10.9725/kts.2019.35.5.317

Investigation of the Effect of Wear Particles on the Acoustic Emission Signal  

Han, Jae-Ho (Graduate School, Dept. of Mechanical Engineering, Yonsei University)
Shin, Dong-Gap (Graduate School, Dept. of Mechanical Engineering, Yonsei University)
Kim, Dae-Eun (Dept. of Mechanical Engineering, Yonsei University)
Publication Information
Tribology and Lubricants / v.35, no.5, 2019 , pp. 317-322 More about this Journal
Abstract
In spite of progress in tribological research, machine component failure due to friction and wear has been reported frequently. This failure may lead to secondary damage that can cause huge expense for maintenance and repair. To prevent economic loss, it is important to detect and predict the initial failure point. In this sense, various researchers have been tried to develop Condition Monitoring (CM) method using Acoustic Emission (AE) generated while the materials undergo failure. In this study, effect of particles on friction and wear was investigated using the pin-on-plate friction test and AE signal was recorded with a band-width type AE sensor. The experiments were performed in dry and lubricant conditions using steel and glass as specimens. After the experiment, 3D laser microscope image was captured to evaluate the wear behavior quantitatively. The AE signal was analyzed in time-domain and frequency-domain. The amplitude was compared with the frictional results. The results of this study showed that particle generation accelerate wear, generate high magnitude AE signal and change the frequency characteristics of the signal. Also, lubricant condition test results showed low coefficient of friction, low wear rate, and low magnitude of AE signal compared to the dry condition. It is expected that the results of this study will aid in better assessment of wear in CM technology
Keywords
acoustic emission; wear; friction; particle; condition monitoring;
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Times Cited By KSCI : 5  (Citation Analysis)
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