Microscopic study on the relationship between AE signal and wear amount

• Published in: Wear Vol. 308; no. 1-2; pp. 142 - 147
• Main Authors: Hase, Alan, Mishina, Hiroshi, Wada, Masaki
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 30.11.2013; Elsevier
• Subjects: Acoustic emission; Adhesive wear; AFM; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Measurement and testing methods; Mechanical contact (friction...); Monitoring; Physics; Solid mechanics; Structural and continuum mechanics; Wear amount; Wear element; Acoustic emission; AFM; Wear amount; Adhesive wear; Wear element; Monitoring; Acoustic emission testing; Waveform; Atomic force microscopy; Friction; Real time
• ISSN: 0043-1648; 1873-2577
• DOI: 10.1016/j.wear.2013.08.005

In order to establish precise in-process measurement of wear amount using an acoustic emission (AE) technique, it is necessary to investigate the relationship between the AE signal and the wear amount quantitatively. In this study, from a microscopic viewpoint using an atomic force microscope, we examined the quantitative relationship between the burst-type AE signal waveform and the quantity of wear elements generated at the elementary process of adhesive wear. As a result, it was found that the burst-type AE signal is detected at the generation of wear elements. And, there is a good correlation between the amplitude and duration of AE signal waveform and the quantity of wear elements generated on the worn surface. The result in this study corresponds to the result of our previous study that there is a linear relationship between the AE energy and wear amount under macroscopic adhesive wear. •In adhesive wear, the burst-type AE signal is detected only when the wear elements (and transfer particles) are observed.•The main AE source in the elementary process of adhesive wear is the generation of wear elements.•There is a correlation between the amplitude and duration of AE signal waveform and the quantity of wear elements.•The AE hit rate (AE counts per sliding distance) is proportional to the adhesion force of combined materials.