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dc.contributor.authorPinyol Puigmartí, Núria Mercè
dc.contributor.authorAlvarado Bueno, Mauricio
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.date.accessioned2017-08-30T12:11:28Z
dc.date.available2017-08-30T12:11:28Z
dc.date.issued2017-07
dc.identifier.citationPinyol, N.M., Alvarado, M. Novel analysis for large strains based on particle image velocimetry. "Canadian geotechnical journal", Juliol 2017, vol. 54, núm. 7, p. 933-944.
dc.identifier.issn0008-3674
dc.identifier.urihttp://hdl.handle.net/2117/107263
dc.description.abstractOver the last few decades, the particle image velocimetry (PIV) technique has become an interesting tool used to measure displacements in the field of experimental mechanics. This paper presents a procedure to interpret PIV displacements, measured following an Eulerian scheme, with the purpose of providing accumulated displacements, velocities, accelerations, and strains on points representing physical particles. Strains are computed as the gradient of displacements. When compared with other standard procedures already published, the presented methodology is especially well suited to interpret large strains. The basis of the procedure is to map displacement increments measured through PIV analysis on the subset (or patch) centres into numerical particles that are defined as portions of the moving masses whose deformation is analyzed. The implementation of the method is explained in detail, highlighting its simplicity. The procedure can be used as a post-processor of currently available PIV software packages. The methodology is first applied to synthetic cases of rectangular samples in which known displacements are imposed and also to a sandy slope failure experiment involving large displacements. The method reproduces satisfactorily the recorded images.
dc.format.extent12 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Geotècnia
dc.subject.lcshParticle image velocimetry
dc.subject.otherparticle image velocimetry (PIV)
dc.subject.otherdigital image correlation
dc.subject.otherlarge displacements
dc.subject.otherPIV post-process
dc.subject.otherlaboratory-scale experiments
dc.titleNovel analysis for large strains based on particle image velocimetry
dc.typeArticle
dc.subject.lemacEnginyeria geotécnica -- Models matemàtics
dc.contributor.groupUniversitat Politècnica de Catalunya. MSR - Mecànica del Sòls i de les Roques
dc.identifier.doi10.1139/cgj-2016-0327
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://www.nrcresearchpress.com/doi/abs/10.1139/cgj-2016-0327
dc.rights.accessOpen Access
local.identifier.drac21185026
dc.description.versionPostprint (author's final draft)
local.citation.authorPinyol, N.M.; Alvarado, M.
local.citation.publicationNameCanadian geotechnical journal
local.citation.volume54
local.citation.number7
local.citation.startingPage933
local.citation.endingPage944


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