Subsequently, the evaluation of AE has been increasingly applied in tribological processes such as investigations of friction and wear processes as well as cavitation phenomena.
#Grun1 time calc crack
Sources of AE are numerous and include deformation, fracture, or crack initiation and propagation, which made and still make the observation of AE a useful tool for machine and structure fault detection intended to enhance operation and to avoid unpredictable failures.
The subsequent analysis of emitted AE offers a wide range of possibilities to deepen the understanding of friction and wear processes.ĪE are elastic waves generated by rapid release of energy.
The acquisition of acoustic emissions (AE) represents a promising phenomenon if the acquisition itself can be conducted effectively. However, for industrial applications, their use is often connected with unjustifiable effort and insufficient results. IntroductionĬonventional tribological parameters such as coefficient of friction (COF), temperature, and contact resistance offer detailed information about ongoing tribological processes when applied on tribological test rigs. Consequently, it was possible to expand the visualization and evaluation capabilities of the test settings offering additional insights by making use of AE. The results of this study include the description of friction as well as wear processes and prove the usability of several AE evaluation parameters whereby a close correlation between AE and tribological processes can be shown. The authors used this technology with the aim of expanding existing test methodologies towards increased visualization capability of tribological processes and investigated the correlation between tribological processes and acoustic emissions on a Ring-on-Disc and a close-to-component journal bearing test setting. The acquisition and evaluation of acoustic emissions (AE) in tribology have proven to be a meaningful tool for condition monitoring and offer possibilities to deepen the understanding of tribological processes.
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