169499 20260302165029.0 doi 10.1016/j.ndteint.2023.102883 sideral 134305 ART-2023-134305 eng Salazar, A. Characterization of semi-infinite delaminations using lock-in thermography: Theory and numerical experiments 2023 Delaminations are buried defects parallel to the sample surface. In the last decades infrared thermography with optical excitation has been used to detect and size the depth of this kind of defects. However, sizing the delamination thickness has been usually disregarded. In a recent paper we proposed a method to size both depth and thickness of ideal delaminations (infinite area) using modulated excitation. Here, we extend the previous work to approach more realistic situations, tackling the case of semi-infinite delaminations. First, we calculate analytically the surface temperature oscillation of a sample containing a semi-infinite delamination using the thermal quadrupoles formalism. Then, we corroborate the analytical results by solving the same problem numerically. Finally, we perform an inverse parametric estimation of synthetic temperature amplitude and phase data with added Gaussian noise to retrieve the three geometrical parameters characterizing the delamination: length, depth and thickness. info:eu-repo/grantAgreement/ES/AEI/PID2019-104347RB-I00 info:eu-repo/semantics/closedAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 4.1 2023 MATERIALS SCIENCE, CHARACTERIZATION & TESTING 5 / 38 = 0.132 2023 Q1 T1 1.028 2023 Condensed Matter Physics 2023 Q1 Mechanical Engineering 2023 Q1 Materials Science (miscellaneous) 2023 Q1 7.2 2023 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Sagarduy-Marcos, D. Rodríguez-Aseguinolaza, J. Mendioroz, A. Celorrio, R. Universidad de Zaragoza (orcid)0000-0003-2183-2159 2005 595 Universidad de Zaragoza Dpto. Matemática Aplicada Área Matemática Aplicada 138 (2023), 102883 [9 pp.] NDT E int. NDT and E International 0963-8695 1426045 http://zaguan.unizar.es/record/169499/files/texto_completo.pdf Versión publicada 1834389 http://zaguan.unizar.es/record/169499/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:169499 articulos driver 2026-03-02-14:47:55 ARTICLE