000170047 001__ 170047 000170047 005__ 20260316092630.0 000170047 0247_ $$2doi$$a10.1007/s10921-026-01341-x 000170047 0248_ $$2sideral$$a148488 000170047 037__ $$aART-2026-148488 000170047 041__ $$aeng 000170047 100__ $$0(orcid)0000-0002-0048-3036$$aCiria-Cosculluela, José C.$$uUniversidad de Zaragoza 000170047 245__ $$aSizing wedge delaminations using lock-in thermography 000170047 260__ $$c2026 000170047 5060_ $$aAccess copy available to the general public$$fUnrestricted 000170047 5203_ $$aSizing hidden defects is a major challenge in many industries. In the last years we have successfully used optically excited lock-in infrared thermography to size the geometrical parameters of both infinite and semi-infinite uniform delaminations. In this work, we study more realistic flaws, by dealing with wedge delaminations of continuously varying width, depth, thickness and combination of two of them. As these parameters vary slowly, the previously developed analytical model for semi-infinite delamination remains valid. We present experimental data taken by applying lock-in infrared thermography on stainless steel samples containing calibrated wedge delaminations. The resulting amplitude and phase thermograms are fitted to the analytical model to obtain the parameters describing the geometry of the delaminations. The agreement found between the retrieved geometry and the true varying parameters strengthens lock-in infrared thermography as a powerful tool to size hidden defects. 000170047 536__ $$9info:eu-repo/grantAgreement/ES/MICIU/PID2023-146099OB-100 000170047 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es 000170047 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000170047 700__ $$aPérez-Arbulu, Jon 000170047 700__ $$aSalazar, Agustín 000170047 700__ $$0(orcid)0000-0003-2183-2159$$aCelorrio, Ricardo$$uUniversidad de Zaragoza 000170047 700__ $$aMendioroz, Arantza 000170047 7102_ $$12005$$2595$$aUniversidad de Zaragoza$$bDpto. Matemática Aplicada$$cÁrea Matemática Aplicada 000170047 7102_ $$15007$$2075$$aUniversidad de Zaragoza$$bDpto. Informát.Ingenie.Sistms.$$cÁrea Ciencia Comput.Intelig.Ar 000170047 773__ $$g45, 44 (2026), 13$$pJ. nondestr. eval.$$tJOURNAL OF NONDESTRUCTIVE EVALUATION$$x0195-9298 000170047 8564_ $$s2687615$$uhttps://zaguan.unizar.es/record/170047/files/texto_completo.pdf$$yVersión publicada 000170047 8564_ $$s2465723$$uhttps://zaguan.unizar.es/record/170047/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000170047 909CO $$ooai:zaguan.unizar.es:170047$$particulos$$pdriver 000170047 951__ $$a2026-03-16-08:17:34 000170047 980__ $$aARTICLE