On possibilities of bispectral approach to signal processing in problems of low-frequency defectoscopy
UDC
539.3/620.179.163DOI:
https://doi.org/10.31429/vestnik-16-1-66-72Abstract
A method of low-frequency diagnostics of internal inhomogeneities, based on the analysis of the parameters of the surface wave field created by shock, is proposed. For the processing of the recorded signal, a bispectralapproach has been used, based on the use of optimal orthogonal signal expansions on a basis that is adaptively tuned by the training set. A series of experimental studies has been conducted to investigate the possibility of using this method for identifying inhomogeneities (cracks, inclusions). The influence of boundary conditions on the possibility of identifying inhomogeneitieshas been investigated. The results of experiments showed that the use of the proposed method provides a clear recognition of the type of defect in the diagnostic space of images.
Keywords:
defect, nondestructive testing, surface wave field, bispectral approachAcknowledgement
Работа выполнена при финансовой поддержке грантов РФФИ в рамках научных проектов (проекты 18-38-00871-мол_а, 18-08-01012).
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Submitted
2019-03-15
Published
2019-03-30
How to Cite
Bocharova O.V., Andjikovich I.E., Andjikovich I.E., Lyzhov V.A., Sedov A.V., Kalinchuk V.V.
On possibilities of bispectral approach to signal processing in problems of low-frequency defectoscopy.
Ecological Bulletin of Research Centers of the Black Sea Economic Cooperation,
2019,
vol. 16,
no. 1,
pp. 66-72.
DOI: https://doi.org/10.31429/vestnik-16-1-66-72
(In Russian)
Copyright (c) 2019 Bocharova O.V., Andjikovich I.E., Andjikovich I.E., Lyzhov V.A., Sedov A.V., Kalinchuk V.V.
This work is licensed under a Creative Commons Attribution 4.0 International License.
