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Modelling for characterizing defects in plates using two-dimensional maps of instantaneous ultrasonic out-of-plane displacement obtained by pulsed TV-holography

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Show simple item record López Vázquez, José Carlos Deán Ben, José Luis Trillo Yáñez, María Cristina Fernández Doval, Ángel Manuel Fernández Fernández, José Luis Amlani, Faisal Bruno, Oscar P. 2016-06-02T06:47:46Z 2016-06-02T06:47:46Z 2009-06-15
dc.description.abstract It has been demonstrated that non-destructive inspection of plates can be performed by using two-dimensional maps of instantaneous out-of-plane displacements obtained with a self-developed pulsed TV-holography system. Specifically, the interaction of guided elastic waves with defects produces scattering patterns that contain information about the defects (position, dimensions, orientation, etc.). For quantitative characterization on this basis, modeling of the wave propagation and interaction with the defects is necessary. In fact, the development of models for scattering of waves in plates is yet an active research field in which the most reliable approach is usually based on the rigorous formulation of elasticity theory. By contrast, in this work the capability of a simple two-dimensional scalar model for obtaining a quantitative description of the output two-dimensional maps associated to artificial defects in plates is studied. Some experiments recording the interaction of narrowband Rayleigh waves with artificial defects in aluminum plates are presented, in which the acoustic field is obtained from the TV-holography optical phase-change maps by means of a specially developed two-step spatio-temporal Fourier transform method. For the modeling, harmonic regime and free-stress boundary conditions are assumed. Comparisons between experimental and simulated maps are included for defects with different shapes. spa
dc.description.sponsorship Ministerio de Ciencia e Innovación y Comisión Europea (FEDER) | Ref. DPI2008-02709 spa
dc.description.sponsorship Dirección Xeral de Investigación, Desenvolvemento e Innovación, Xunta de Galicia | Ref. INCITE08PXIB303252PR spa
dc.description.sponsorship Universidad de Vigo | Ref. I608122F64102 spa
dc.description.sponsorship Air Force Office of Scientific Research spa
dc.description.sponsorship National Science Foundation spa
dc.language.iso eng spa
dc.title Modelling for characterizing defects in plates using two-dimensional maps of instantaneous ultrasonic out-of-plane displacement obtained by pulsed TV-holography spa
dc.type conferenceObject spa
dc.rights.accessRights openAccess spa
dc.identifier.doi 10.1117/12.827819
dc.identifier.editor spa
dc.publisher.departamento Física aplicada spa
dc.conferenceObject.type Comunicación extensa internacional spa
dc.identifier.conferenceObject Optical Measurement Systems for Industrial Inspection VI, Munich, Alemania, 14-18 junio 2009 spa
dc.identifier.conference spa
dc.publisher.grupoinvestigacion Grupo de Metroloxía Óptica spa
dc.subject.unesco 3311.11 Instrumentos Opticos spa
dc.subject.unesco 2209.07 Holografía spa
dc.subject.unesco 2201.09 Ultrasonidos spa 2016-05-31T21:19:21Z

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