Technical Diagnostics and Non-Destructive Testing №2, 2018, pp. 16-23
Operational control of the quality and stressed state of welded panels from vt-20 alloy by digital shearography methods
L. M. Lobanov, V. A. Pivtorak
E.O.Paton Electric Welding Institute of the NAS of Ukraine, 11 Kazimir Malevich str., 03150, Kiev. E-mail: email@example.com
Technologies of nondestructive testing of the quality and determination of residual stresses in welded structures based on the methods of digital shearography and speckle-interferometry were developed. The paper presents the results of diagnostics of the quality of welded titanium panels from VT-20 alloy, made with elastic pre-tension and determination of residual stresses in welded panel elements. The effectiveness of application of the methods of digital shearography and speckle-interferometry is shown for diagnostics of quality and determination of residual stresses in titanium panel elements without dismantling the fixtures for tension application that allows, if required, immediately proceeding to elimination of the defects.
Keywords: nondestructive quality testing, stressed state determination, diagnostics of thin-walled panels, digital shearography, electronic speckle-interferometry.
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