The Feature Extraction through Wavelet Coefficients of Metal Friction Noise for Adhesive and Abrasive Wear Monitoring
- Title
- The Feature Extraction through Wavelet Coefficients of Metal Friction Noise for Adhesive and Abrasive Wear Monitoring
- Author
- 박준홍
- Keywords
- friction; acoustic noise; adhesive wear; abrasive wear; wavelet coefficient
- Issue Date
- 2021-05
- Publisher
- MDPI
- Citation
- APPLIED SCIENCES-BASEL, v. 11, NO. 9, article no. 3755
- Abstract
- Featured Application Monitoring of Contact in Machining System for Possible Wears during Operation Movements. Friction between metals is a physical phenomenon that occurs in manufacturing machine tools. This annoying noise implies unnecessary metal contact and deterioration of a mechanical system. In this study, for the monitoring of the friction between two metal surfaces, the acoustic signature was extracted by applying the wavelet transform method to the noise measured from the change in contact force for each state of adhesive and abrasive wear. Experiments were conducted with a constant relative speed between the contacting metal surfaces. For the adhesive wear, the peak signal-to-noise ratio (PSNR) calculated by the wavelet transformation increases with the increasing contact pressure. Opposite trends were observed for the abrasive wear. The proposed index formed a group within a specific range. This ratio exhibited a strong relationship with the wear characteristics and the surface condition. From the proposed index calculated by the wavelet coefficients, the continuous monitoring of the wear influence on the failure of the machine movement operations is achieved by the sound radiation from the contacting surfaces.
- URI
- https://www.mdpi.com/2076-3417/11/9/3755https://repository.hanyang.ac.kr/handle/20.500.11754/177478
- ISSN
- 2076-3417;2076-3417
- DOI
- 10.3390/app11093755
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
- Files in This Item:
- The Feature Extraction through Wavelet Coefficients of Metal Friction Noise for Adhesive and Abrasive Wear Monitoring.pdfDownload
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