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Residual stress assessment using optical techniques

dc.contributor.authorRibeiro, J.E.
dc.contributor.authorMonteiro, Jaime M.
dc.contributor.authorVaz, M.A.P.
dc.contributor.authorLopes, Hernani
dc.contributor.authorPiloto, P.A.G.
dc.date.accessioned2011-05-17T16:01:02Z
dc.date.available2011-05-17T16:01:02Z
dc.date.issued2006
dc.description.abstractThe goal of this work is the development of different experimental techniques to measure residual stresses as alternative to the hole-drilling method with strain gages. The proposed experimental techniques are based on the use of Moiré Interferometry and in-plane Digital Speckle Pattern Interferometry (ESPI). They are field techniques that allow measure in-plane displacements without contact and with high resolution. Grating replication techniques are developed to record high quality diffraction gratings onto the specimen’s surfaces .It is also, developed an optical assembly of laser interferometry used to generate the master grating (virtual). It was designed and implemented an in-plane interferometer to measure displacements in one direction. It was also developed a drilling equipment to provoke the stress relaxation in the specimens. During residual stresses measurements the obtained fringe patterns (Moiré and speckle) are video recorded. Image processing techniques are used to assess the in-plane strain field. A finite elements code (ANSYS®) is used to simulate the process of relaxation of stresses whose values will be compared with the experimental ones and to calculate the hole-drilling calibration constants.por
dc.identifier.citationRibeiro, J.E.; Monteiro, J.; Vaz, M.A.P.; Lopes, H.; Piloto (2006). Residual stress assessment using optical techniques. In 5th International Conference on Mechanics and Materials in Design. Porto.por
dc.identifier.urihttp://hdl.handle.net/10198/4346
dc.language.isoengpor
dc.peerreviewedyespor
dc.subjectResidual stresspor
dc.subjectOptical techniquespor
dc.subjectMoiré interferometrypor
dc.subjectESPIpor
dc.titleResidual stress assessment using optical techniquespor
dc.typeconference paper
dspace.entity.typePublication
oaire.citation.conferencePlacePortopor
oaire.citation.title5th International Conference on Mechanics and Materials in Designpor
person.familyNameRibeiro
person.familyNamePiloto
person.givenNameJ.E.
person.givenNamePaulo A.G.
person.identifierR-000-6Y8
person.identifier.ciencia-id0F15-FB62-29DB
person.identifier.ciencia-id0519-449D-6F13
person.identifier.orcid0000-0001-6300-148X
person.identifier.orcid0000-0003-2834-0501
person.identifier.ridG-3839-2018
person.identifier.ridB-4866-2008
person.identifier.scopus-author-id25638652400
person.identifier.scopus-author-id6506406159
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
relation.isAuthorOfPublicationc90169e6-7889-4270-a096-35b98c75f9f9
relation.isAuthorOfPublicationbaaee084-ab97-4c95-b636-24ab6bab0e3e
relation.isAuthorOfPublication.latestForDiscoveryc90169e6-7889-4270-a096-35b98c75f9f9

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