Acoustic noise emission in a model PMMA/steel fretting contact

Acoustic noise emission, due to stick-slip friction, has been investigated in a fretting contact between a PMMA flat and a steel ball. A spectral analysis of the noise emitted during the fretting process is described using different values of the sliding speed and the contact load. The results have been interpreted in the light of the dynamic measurements of the strain imposed upon the PMMA surface, close to the contact area.

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