Methodology, validation & signal processing of acoustic emissions for selected lubricated tribological contacts
Research output: Contribution to journal › Article › Research › peer-review
Standard
In: Materials Today: Proceedings, Vol. 2022, No. 5, 02.05.2022, p. 2604-2610.
Research output: Contribution to journal › Article › Research › peer-review
Harvard
APA
Vancouver
Author
Bibtex - Download
}
RIS (suitable for import to EndNote) - Download
TY - JOUR
T1 - Methodology, validation & signal processing of acoustic emissions for selected lubricated tribological contacts
AU - Strablegg, Christopher
AU - Renhart, Philipp
AU - Summer, Florian
AU - Grün, Florian
N1 - Publisher Copyright: © 2022
PY - 2022/5/2
Y1 - 2022/5/2
N2 - Acoustic emission in the ultrasonic range in tribology and from friction-based events in general are an interesting field of study, because it provides information classical parameters can't. Therefore, it is very important to develop good working and unified methodologies for recording the acoustic signals. In this work two methodologies for recording acoustic emissions for sliding contacts are presented. The validation of the signals from the sensor to the digital data in the computer is shown. To gain good information it is necessary to reduce noise and disturbances in the data as much as technically feasible. Electrical insulation, shielding, cable management, filtering and blind-testing are introduced. Signal processing of the data happens via various methods, such as Root-mean-square (RMS), filtering (band-pass, filter bank), short-time-Fourier-transformation (STFT), wavelet-transformation and combined techniques. Gathered information with these methods is shown for an example of a plain sliding surface Ring-on-disc test. The RMS works good as overall running indicator, while the spectral methods give insights in the different tribological effects and changes on the surface of the sample over the course of the test. [copyright information to be updated in production process]
AB - Acoustic emission in the ultrasonic range in tribology and from friction-based events in general are an interesting field of study, because it provides information classical parameters can't. Therefore, it is very important to develop good working and unified methodologies for recording the acoustic signals. In this work two methodologies for recording acoustic emissions for sliding contacts are presented. The validation of the signals from the sensor to the digital data in the computer is shown. To gain good information it is necessary to reduce noise and disturbances in the data as much as technically feasible. Electrical insulation, shielding, cable management, filtering and blind-testing are introduced. Signal processing of the data happens via various methods, such as Root-mean-square (RMS), filtering (band-pass, filter bank), short-time-Fourier-transformation (STFT), wavelet-transformation and combined techniques. Gathered information with these methods is shown for an example of a plain sliding surface Ring-on-disc test. The RMS works good as overall running indicator, while the spectral methods give insights in the different tribological effects and changes on the surface of the sample over the course of the test. [copyright information to be updated in production process]
KW - acoustic emission
KW - tribology
KW - sliding friction
KW - signal processing
UR - http://www.scopus.com/inward/record.url?scp=85129508463&partnerID=8YFLogxK
U2 - 10.1016/j.matpr.2022.04.553
DO - 10.1016/j.matpr.2022.04.553
M3 - Article
VL - 2022
SP - 2604
EP - 2610
JO - Materials Today: Proceedings
JF - Materials Today: Proceedings
SN - 2214-7853
IS - 5
T2 - 37th Danubia Adria Symposium
Y2 - 21 September 2021 through 24 September 2021
ER -