000169494 001__ 169494 000169494 005__ 20260302165029.0 000169494 0247_ $$2doi$$a10.1007/s10765-014-1676-3 000169494 0248_ $$2sideral$$a91882 000169494 037__ $$aART-2015-91882 000169494 041__ $$aeng 000169494 100__ $$0(orcid)0000-0003-2183-2159$$aCelorrio, R.$$uUniversidad de Zaragoza 000169494 245__ $$aAdvances in Crack Characterization by Lock-In Infrared Thermography 000169494 260__ $$c2015 000169494 5203_ $$aDetecting cracks in a nondestructive way is a challenge that has been addressed for decades but which is not completely solved yet. For the last years, infrared thermography has been the preferred photothermal technique to detect cracks, because of its capability to record surface temperature images. In this work, a discontinuous Galerkin (DG) finite element method has been developed to simulate the temperature evolution of an opaque sample with inner cracks characterized by their thermal contact resistance. DG methods are natural tools to tackle physical problems with discontinuous solutions where classical finite element methods fail. Discontinuous finite elements allow calculation of the surface temperature modification due to the presence of cracks of any size, shape, and thickness. Lock-in infrared thermography measurements, performed on calibrated vertical cracks in metallic samples, confirm the validity of the model. 000169494 540__ $$9info:eu-repo/semantics/closedAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/ 000169494 590__ $$a0.946$$b2015 000169494 591__ $$aMECHANICS$$b94 / 135 = 0.696$$c2015$$dQ3$$eT3 000169494 591__ $$aTHERMODYNAMICS$$b39 / 57 = 0.684$$c2015$$dQ3$$eT3 000169494 591__ $$aPHYSICS, APPLIED$$b113 / 144 = 0.785$$c2015$$dQ4$$eT3 000169494 591__ $$aCHEMISTRY, PHYSICAL$$b120 / 144 = 0.833$$c2015$$dQ4$$eT3 000169494 592__ $$a0.391$$b2015 000169494 593__ $$aCondensed Matter Physics$$c2015$$dQ3 000169494 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000169494 700__ $$0(orcid)0000-0002-3143-9097$$aOmella, A. J.$$uUniversidad de Zaragoza 000169494 700__ $$aMendioroz, A. 000169494 700__ $$aOleaga, A. 000169494 700__ $$aSalazar, A. 000169494 7102_ $$12005$$2595$$aUniversidad de Zaragoza$$bDpto. Matemática Aplicada$$cÁrea Matemática Aplicada 000169494 7102_ $$12005$$2X$$aUniversidad de Zaragoza$$bDpto. Matemática Aplicada$$cProy. investigación HMA 000169494 773__ $$g36, 5-6 (2015), 1202-1207$$pInt. j. thermophys.$$tINTERNATIONAL JOURNAL OF THERMOPHYSICS$$x0195-928X 000169494 8564_ $$s506299$$uhttps://zaguan.unizar.es/record/169494/files/texto_completo.pdf$$yVersión publicada 000169494 8564_ $$s1115783$$uhttps://zaguan.unizar.es/record/169494/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000169494 909CO $$ooai:zaguan.unizar.es:169494$$particulos$$pdriver 000169494 951__ $$a2026-03-02-14:47:49 000169494 980__ $$aARTICLE