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M. Varga, M. Haas, C. Schneidhofer:
"Wear intensity evaluation in conveying systems - An acoustic emission and vibration measurement approach";
Tribology International, 149 (2020), 1055491 - 1055498.

Conveying raw materials is essential in heavy industries and mostly accompanied by wear. Impinging of ma- terials cause energy transfer, generating elastic waves. In this work, an acoustic emission (AE) measurement system and an accelerometer for vibrations were utilised to assess different wear phenomena.
A 3-fold approach was undertaken: i) identification of characteristic acoustic damage features in a model impact-test; ii) impact tests with raw materials on wear plates in lab-scale; iii) field test of the measurement systems in the harsh environment of a steel plant.
Results showed clear frequency changes with decreasing plate thickness. Micro-cracking was indicated by high frequencies, showing the first stage of wear. AE and vibration measurements distinguished raw materials clearly in both, close-to-reality and field testing.

Acoustic emission Impact wear Wear measurement Lifetime prediction

http://dx.doi.org/10.1016/j.triboint.2019.01.008

https://doi.org/10.1016/j.triboint.2019.01.008