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dc.contributor.authorSolaguren-Beascoa Fernández, Manuel 
dc.date.accessioned2024-06-14T07:21:20Z
dc.date.available2024-06-14T07:21:20Z
dc.date.issued2023-05-01
dc.identifier.issn0022-3093
dc.identifier.urihttp://hdl.handle.net/10259/9259
dc.description.abstractIn this study, a method for evaluating the uncertainty of stress-optic coefficient measurements of photoelastic materials on a uniaxial tension/compression specimen is presented. The same problem is also approached in other previously used methods, in which multiple data fitted with ordinary least squares are considered. However, only the repeatability contribution to uncertainty is considered in those other methods, which are therefore not consistent with the ISO–Guide to the expression of Uncertainty in Measurement. All possible contributions to uncertainty can be taken into account using the General Least Squares-Lagrange Multipliers (GLS-LM) method presented here. The application of the method is illustrated with an example, from which it can be seen that uncertainty has been underestimated in the other methods used to date. As well as the estimate of the stress-optic coefficient and its corresponding standard uncertainty, the method also provides a data consistency test and an outlier identification tool.en
dc.format.mimetypeapplication/pdf
dc.language.isoenges
dc.publisherElsevieren
dc.relation.ispartofJournal of Non-Crystalline Solids. 2023, V. 607, 122249en
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectStress-optic coefficiente
dc.subjectPhotoelasticityen
dc.subjectUncertaintyen
dc.subjectMeasurementen
dc.subjectMetrologyen
dc.subject.otherIngeniería mecánicaes
dc.subject.otherMechanical engineeringen
dc.subject.otherResistencia de materialeses
dc.subject.otherStrength of materialsen
dc.titleEvaluation of uncertainty in the measurement of the stress-optic coefficienten
dc.typeinfo:eu-repo/semantics/articlees
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.relation.publisherversionhttps://doi.org/10.1016/j.jnoncrysol.2023.122249es
dc.identifier.doi10.1016/j.jnoncrysol.2023.122249
dc.journal.titleJournal of Non-Crystalline Solidsen
dc.volume.number607es
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersiones


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