Archives of Acoustics, 44, 3, pp. 493–503, 2019

Properties of Amplitude Distributions of Acoustic Emission Signals Generated in Pressure Vessel During Testing

Franciszek WITOS
Silesian University of Technology

In the paper, the results of investigations on the properties of acoustic emission signals generated in a tested pressure vessel are presented. The investigations were performed by repeating several times the following procedure: an increase in pressure, maintaining a given pressure level, a further increase in pressure, and then maintaining the pressure at new determined level. During the tests the acoustic emission signals were recorded by the measuring system 8AE-PD with piezoelectric sensors D9241A. The used eight-channel measuring system 8AE-PD enables the monitoring, recording and then basic and advanced analysis of signals.

The results of basic analysis carried out in domain of time and the results of advanced analysis carried out in the discrimination threshold domain of the recorded acoustic emission signals are presented in the paper.

In the framework of the advanced analysis, results are described by the defined by the author descriptors with acronyms ADC, ADP and ADNC. Such description is based on identifying the properties of amplitude distributions of acoustic emission signals by assigning them the level of advancement. It is shown that for signals including continoues AE or single burst AE signals descriptions of such registered signals by means of ADC, ADP and ADNC descriptors and by Upp and Urms descriptors provide identical ordering of registered acoustic emission signals. For complex signals, the description using ADC, ADP and ADNC descriptors based on the analysis of amplitude distributions of recorded signals gives the order of signals with more accurate connection with deformational processes being sources of acoustic emission signals.
Keywords: acoustic emission; multichannel measuring system; amplitude distribution; descriptors; pressure vessel
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EN 13554:2011:E, Non-destructive testing – Acoustic emission testing – General principles.

Ennaceur C., Laksimi A., Herve C., Cherfaoui M. (2006), Monitoring crack growth in pressure vessel steels by the acoustic emission technique and the method of potential difference, International Journal of Pressure Vessels and Piping, 83, 197–204.

Mazal P., Vlasic F., Koula V. (2015), Use of acoustic emission method for identification of fatigue micro-cracks creation, Procedia Engineering, 133, 379–388.

Mostafapour A., Davoudi S. (2013), Analysis of leakage in high pressure pipe using acoustic emission method, Applied Acoustics, 74, 335–342.

Olszewska A., Witos F. (2012), Location of partial discharge sources and analysis of signals in chosen power oil transformers by means of acoustic emission method, Acta Physica Polonica A, 122, 5, 921–926.

Qiu F., Dai G., Zhang Y. (2017), Application of an acoustic emission quantitative method to evaluate oil tank bottom corrosion based on corrosion risk pace, Insight, 59, 12, 653–6589.

Sokolkin A.V., Ievlev I.Yu., Cholakh S.O. (2002), Use of acoustic emission in testing bottoms of welded vertical tanks for oil and oil derivatives, Russian Journal of Nondestructive Testing, 38, 1, 902–908.

Witos F. (2018a), Application of acoustic emission method for partial discharge research in selected elements and devices of electric power systems, Proceedings of 2018 Joint Conference Acoustics, September, 11–14, 2018, Ustka, Poland, pp. 319–324, IEEE Conference Record: # 44813, doi: 10.1109/ACOUSTICS.2018.8502315.

Witos F. [Ed.], (2018b), Investigation of partial discharges in power oil transformers by AE, LAP LAMBERT Academic Publishing, 94 pages.

Witos F. et al. (2017), Calibration and laboratory testing of computer measuring system 8AE-PD dedicated for analysis of acoustic emission signals generated by partial discharges within oil power transformers, Archives of Acoustic, 42, 2, 297–311.

Witos F., Gacek Z. (2013), Testing of partial discharges and location of their sources in generator coil bars by means of acoustic emission and electric methods, [in:] Acoustic emission – research and applications, W. Sikorski [Ed.], InTech, Rijeka, pp. 117–145.

Witos F., Olszewska A., Szerszeń G. (2011), Analysis of properties characteristic for acoustic emission signals recorded on-line in power oil transformers, Acta Physica Polonica A, 120, 4, 759–762.

Witos F., Opilski Z. (2016), The method of partial discharges locating, particularly in the power oil transformers, based on the map of acoustic emission descriptors in the frequency domain, PL Patent: number 223 605, Oct. 2016.

Witos F., Opilski Z., Szerszen G., Setkiewicz M. (2019), The 8AE-PD computer measurement system for registration and analysis of acoustic emission signals generated by partial discharges in oil power transformer, Metrology and Measurements Systems, 26, 2, 403–418.

Witos F., Szerszeń G., Setkiewicz M. (2016), Mounting holder, especially for acoustic emission sensors, to the side surfaces of the transformer tank, PL Patent, number 223 606, Oct. 2016.

DOI: 10.24425/aoa.2019.129264