Discovering the defects in paintings using non-destructive testing (NDT) techniques and passing through measurements of deformation

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dc.contributor.authorSfarra, Stefano-
dc.contributor.authorIbarra Castanedo, Clemente-
dc.contributor.authorAmbrosini, Dario-
dc.contributor.authorPaoletti, Domenica-
dc.contributor.authorBendada, Abdelhakim-
dc.contributor.authorMaldague, X.-
dc.description.abstractThe present study is focused on two topics. The former is a mathematical model useful to understand the deformation of paintings, which uses straining devices, adjustable and micrometrically controlled through a pin implanted in a hollow cylinder. Strains were analyzed by holographic interferometry (HI) technique using an appropriate frame. The latter concerns the need to improve the conservator’s knowledge about the defect’s detection and defect’s propagation in acrylic painting characterized by underdrawings and pentimenti. To accomplish this task, a sample was manufactured to clarify the several uncertainties inherent the influence of external factors on their conservation. Subsurface anomalies were also retrieved by near-infrared reflectography and transmittography techniques, using LED lamps and several narrow-band filters mounted on a CMOS camera, working at different wavelengths and in combination with UV imaging. In addition, a sponge glued on the rear side of the canvas was impregnated with a precise amount of water by means of a syringe to verify the stretcher effect by digital speckle photography (DSP) technique (using MatPIV). The same effect also affects the sharp transition of the canvas at the stretcher’s edge. In this case, the direct mechanical contact between stretcher and canvas was investigated by HI technique. Finally, advanced algorithms were successfully applied to the square pulse thermography data to detect three Mylar® inserts simulating different types of defects. These fabricated defects were also identified by optical techniques: DSP and laser speckle imaging.fr_CA
dc.publisherPlenum Press.fr_CA
dc.subjectSquare pulse thermographyfr_CA
dc.subjectHolographic interferometryfr_CA
dc.subjectDigital speckle photographyfr_CA
dc.titleDiscovering the defects in paintings using non-destructive testing (NDT) techniques and passing through measurements of deformationfr_CA
dc.typeCOAR1_1::Texte::Périodique::Revue::Contribution à un journal::Article::Article de recherche-
dcterms.bibliographicCitationJournal of Nondestructive Evaluation, Vol. 33 (3), 358–383 (2014)fr_CA
dc.audienceProfesseurs (Enseignement supérieur)fr_CA
dc.audienceRestaurateurs (Art)fr_CA
dc.subject.rvmInterférométrie holographiquefr_CA
dc.subject.rvmPhotographie numériquefr_CA
dc.subject.rvmPeinture -- Conservation et restaurationfr_CA
dc.subject.rvmPeinture acryliquefr_CA
dc.subject.rvmContrôle non destructiffr_CA
rioxxterms.versionAccepted Manuscriptfr_CA
rioxxterms.project.funder_nameNatural Sciences and Engineering Research Council of Canadafr_CA
bul.rights.periodeEmbargo12 moisfr_CA
Collection:Articles publiés dans des revues avec comité de lecture

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