On efficient method of signal processing in problems of low-frequency defetoscopy
UDC
539.3/620.179.163Abstract
A method for low-frequency diagnostics of internal inhomogeneities is proposed, based on the analysis of the surface wave field parameters, created by impact action. Multifunctional measuring complex, allowing carrying out research, comparing signals and constructing spectral characteristics by using sensors of various types, has been created to conduct a series of experimental investigations. For the processing of the recorded signal a bispectral method is applied based on using the optimal orthogonal expansions of the signal by its basis, adaptively set up on the training sample. A series of experimental studies has been carried out to investigate the possibility of using bispectral method to indentify the size and depth of the cracks. The experimental results have shown that the usage of the proposed method provides a clear recognition of the size and depth of the bedding cracks in the diagnostic space of images.
Keywords:
defect, nondestructive testing, surface wave field, bispectral methodAcknowledgement
Работа выполнена при финансовой поддержке грантов РФФИ (проекты 16-48-230068_р_юг_а, 14-08-01213, 16-01-00647).
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Pages
20-25
Submitted
2016-12-16
Published
2016-12-22
How to Cite
Bocharova O.V., Sedov A.V., Andjikovich I.E., Kalinchuk V.V.
On efficient method of signal processing in problems of low-frequency defetoscopy.
Ecological Bulletin of Research Centers of the Black Sea Economic Cooperation,
2016,
no. 4,
pp. 20-25.
(In Russian)
Copyright (c) 2016 Bocharova O.V., Sedov A.V., Andjikovich I.E., Kalinchuk V.V.
This work is licensed under a Creative Commons Attribution 4.0 International License.
