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M. Haas, K. El Syaad, U. Cihak-Bayr, A. Pauschitz, M. Gröschl:
"Examination of undisturbed acoustic emission generated by experimentally modelled two-body abrasive wear events";
Tribology International, 141 (2020), 1059121 - 1059129.

Acoustic emission (AE), i.e. elastic waves caused by rapid release of elastic energy, is sensitive to wear mechanisms.
However, the nature of wear is complex and, in addition, reflections of AE waves at the boundaries of
the propagation medium cause interferences and complicate the correlation of AE features and wear events. To
overcome these problems, an experiment has been established which experimentally models temporally short
two-body abrasive wear events. The aim was to reveal the relationship between wear and associated AE. The
RMS value of AE showed a correlation with the contact area of the experimentally modelled wear events.
Normalized mean values of specific frequency ranges of Fourier transformed AE are applicable for distinction of
the type of modelled wear.

Acoustic emission Abrasive wear RMS Calibration

http://dx.doi.org/10.1016/j.triboint.2019.105912