ISSN 0474-8662. Information Extraction and Processing. 2019. Issue 47 (123)
Home Back to issue

Statistical properties of signal pulse amplitude of magnetoelastic acoustic emission

Pochapskyy Y. P.
Karpenko Physico-Mechanical Institute of the NAS of Ukraine, Lviv
Klym B. P.
Karpenko Physico-Mechanical Institute of the NAS of Ukraine, Lviv
Melnyk N. P.
Karpenko Physico-Mechanical Institute of the NAS of Ukraine, Lviv
Velykyi P. P.
Karpenko Physico-Mechanical Institute of the NAS of Ukraine, Lviv

https://doi.org/10.15407/vidbir2019.47.047

Keywords: magnetoelastic acoustic emission signal, magnetic field, probability density of amplitude distribution, residual stress

Cite as: Pochapskyy Y. P., Klym B. P., Melnyk N. P., Velykyi P. P. Statistical properties of signal pulse amplitude of magnetoelastic acoustic emission. Information Extraction and Processing. 2019, 47(123), 47-53. DOI:https://doi.org/10.15407/vidbir2019.47.047


Abstract

The amplitude of the pulses of the magnetoelastic acoustic emission signal is shown to be distributed according to the exponential law, which makes it possible to use its attenuation parameter as an informative one for the diagnostics of ferromagnetic objects. The dependences of the attenuation coefficients of the approximate exponents of the obtained amplitude distribu¬tions estimates on the applied load are constructed, which can be used as calibration curves for the diagnostics of residual stresses in long-term operation ferromagnetic objects.


References