The Paton Welding Journal, 2026, №10

2026 №10 (05)

2026 №10 (02)

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The Paton Welding Journal, 2026, #10, 3-11 pages

Automated detection of defective areas in a multilayer thin-walled structure with a periodic configuration using laser interferometry methods

L.M. Lobanov, I.L. Shkurat, O.P. Shutkevych, I.V. Kyianets, V.V. Savitsky

E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: innashkurat2909@gmail.com

Abstract
Simulation and data analysis methods were applied to detect and evaluate deformations in thin-walled structures with a periodic configuration, particularly in welded multilayer panels. The use of the finite element method made it possible to determine characteristic spatial deformation profiles and their relationship to defect localization. Fourier analysis and differentiation techniques were used to develop an algorithm for the automated detection of defective areas in thin-walled structures. It is shown that the use of the displacement derivative ∂w/∂y provides more precise localization of defects compared to an analysis of displacements alone. This justifies the feasibility of applying the shearography method as one of the most informative approaches to the non-destructive testing of such structures. The obtained results are confirmed by both numerical and experimental data, indicating the suitability of the methodology for diagnosing a wide class of thin-walled structures.
Keywords: thin-walled structures, stress-strain state, finite element method, Fourier analysis, non-destructive testing, laser interferometry, shearography, automated defect detection

Received: 12.07.2026
Received in revised form: 20.08.2026
Accepted: 30.10.2026

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Suggested Citation

L.M. Lobanov, I.L. Shkurat, O.P. Shutkevych, I.V. Kyianets, V.V. Savitsky (2026) Automated detection of defective areas in a multilayer thin-walled structure with a periodic configuration using laser interferometry methods. The Paton Welding J., 10, 3-11.

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