Acoustic emission-based monitoring of surfaces subjected to friction

Kassahun Asamene; Mannur Sundaresan

doi:10.1117/12.915446

4 April 2012 Acoustic emission-based monitoring of surfaces subjected to friction

Kassahun Asamene, Mannur Sundaresan

Proceedings Volume 8347, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2012; 834712 (2012) https://doi.org/10.1117/12.915446
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2012, San Diego, California, United States

Abstract

Machine parts often contain components which experience relative motion during service. Relative motion between surfaces causes fatigue crack, wear and eventual surface deterioration. Acoustic emission based machinery condition monitoring is a method which can potentially be used to monitor the state of damage present on surfaces during service. This research deals with changes that occur in the characteristics of acoustic emission signals due to altering surface roughness and texture caused by friction loading. A test fixture was used to simulate friction between surfaces of comparable surface finish and obtain acoustic emission signals generated in the process. The different characteristics of signal waveforms obtained at different instances during the test were examined. It was shown that some features like amplitude and duration of the waveforms are sensitive to surface wear.

Citation Download Citation

Kassahun Asamene and Mannur Sundaresan "Acoustic emission-based monitoring of surfaces subjected to friction", Proc. SPIE 8347, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2012, 834712 (4 April 2012); https://doi.org/10.1117/12.915446

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