| Issue |
ITM Web Conf.
Volume 19, 2018
Computer Applications in Electrical Engineering (ZKwE’2018)
|
|
|---|---|---|
| Article Number | 01014 | |
| Number of page(s) | 2 | |
| DOI | https://doi.org/10.1051/itmconf/20181901014 | |
| Published online | 21 September 2018 | |
Influence of defect in an excited steel plate on the results of time-frequency analysis
1
Poznan University of Technology, Faculty of Electrical Engineering, Piotrowo 3A, 60-965 Poznan, Poland
2
Poznan University of Technology, Faculty of Civil Engineering, Piotrowo 5, 60-965 Poznan, Poland
*
Corresponding author: arkadiusz.dobrzycki@put.poznan.pl
The paper pertains the use of non-invasive diagnostic methods to assess the condition of metal elements of machinery and equipment or metal components of building structures. The conducted research concerns the analysis of acoustic signals generated during the excitation of a steel plate and the influence of discontinuities such as grooves and apertures in its structure on spectrogram of recorded acoustic emission signals. Since the presence of the opening causes a significant increase in the initial phase of the acoustic event, higher frequencies (20-55 kHz) and faster decay of the signal, so it should be noted that the frequency analysis of recorded signals, in the initial phase of the acoustic event, can be considered as an indicator of the damage presence.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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