000169503 001__ 169503
000169503 005__ 20260302165029.0
000169503 0247_ $$2doi$$a10.1088/0957-0233/25/11/115602
000169503 0248_ $$2sideral$$a100166
000169503 037__ $$aART-2014-100166
000169503 041__ $$aeng
000169503 100__ $$0(orcid)0000-0003-2183-2159$$aCelorrio, R.$$uUniversidad de Zaragoza
000169503 245__ $$aVertical cracks characterization using lock-in thermography: II Finite cracks
000169503 260__ $$c2014
000169503 5060_ $$aAccess copy available to the general public$$fUnrestricted
000169503 5203_ $$aThe aim of this work is to characterize vertical cracks of finite size and arbitrary shape using optically excited lock-in thermography. In the first place, we have solved the direct problem, which consists of calculating the surface temperature distribution when the shape, size and width of the vertical crack are known. To do this we have developed a new method based on discontinuous finite elements, which allows one to deal even with very narrow cracks, for which classical finite element methods fail. The surface temperature of steel samples containing semi-infinite cracks and illuminated with a laser beam focused close to the crack has been measured using a lock-in thermography setup. A least square fit of the amplitude and phase of the surface temperature is used to retrieve the width and depth of the semi-infinite crack. A very good agreement between the nominal and retrieved values of both parameters is found, confirming the validity of the model.
000169503 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
000169503 590__ $$a1.433$$b2014
000169503 591__ $$aINSTRUMENTS & INSTRUMENTATION$$b25 / 56 = 0.446$$c2014$$dQ2$$eT2
000169503 591__ $$aENGINEERING, MULTIDISCIPLINARY$$b23 / 85 = 0.271$$c2014$$dQ2$$eT1
000169503 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000169503 700__ $$0(orcid)0000-0002-3143-9097$$aOmella, A. J.$$uUniversidad de Zaragoza
000169503 700__ $$aPech-May, N.
000169503 700__ $$aOleaga, A.
000169503 700__ $$aMendioroz, A.
000169503 700__ $$aSalazar, A.
000169503 7102_ $$12005$$2595$$aUniversidad de Zaragoza$$bDpto. Matemática Aplicada$$cÁrea Matemática Aplicada
000169503 7102_ $$12005$$2X$$aUniversidad de Zaragoza$$bDpto. Matemática Aplicada$$cProy. investigación HMA
000169503 773__ $$g25, 11 (2014), -$$pMeas. sci. technol.$$tMEASUREMENT SCIENCE & TECHNOLOGY$$x0957-0233
000169503 8564_ $$s1369174$$uhttps://zaguan.unizar.es/record/169503/files/texto_completo.pdf$$yPostprint
000169503 8564_ $$s1405629$$uhttps://zaguan.unizar.es/record/169503/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000169503 909CO $$ooai:zaguan.unizar.es:169503$$particulos$$pdriver
000169503 951__ $$a2026-03-02-14:48:00
000169503 980__ $$aARTICLE