Evaluation of measurement uncertainties of digital volume correlation applied to laminography data

Ante Buljac 1, 2 Thibault Taillandier-Thomas 2 Lukas Helfen 3 Thilo Morgeneyer 1 François Hild 2
1 MAT - Centre des Matériaux
2 LMT - Laboratoire de Mécanique et Technologie
3 ESRF - European Synchrotron Radiation Facility
Abstract : The effect of different data acquisition parameters on the displacement and strain uncertainties of kinematic fields is assessed via digital volume correlation applied to three-dimensional data sets imaged by synchrotron laminography. The measurement uncertainty is estimated for (1) different materials and associated varying contrast; (2) repeated scans, that is, uncertainty due to the imaging system and three-dimensional reconstruction; (3) rigid body motions between two subsequent scans; (4) rescaling of the gray level histogram during 32-bit floating point to 8-bit integer data conversion; (5) changes in the beam properties, that is, use of a monochromator or an undulator; and (6) changes in camera/detector characteristics. It is found that the amount of image contrast is not the only parameter that controls uncertainties for different materials. Furthermore, the rigid body motion procedure should be preferred over repeated scans as it provides more conservative measurement uncertainty values. The applied 32- to 8-bit conversion procedure, beam tuning and detector characteristics hardly affect the measurement uncertainty.
Keywords : Synchrotron laminography Uncertainty quantication Digital Volume Correlation Kinematic measurements Resolution
Type de document :
Article dans une revue
Journal of Strain Analysis for Engineering Design, SAGE Publications, 2018, 53, pp.49-65. 〈10.1177/0309324717748097〉
Liste complète des métadonnées

Littérature citée [46 références]  Voir  Masquer  Télécharger
https://hal.archives-ouvertes.fr/hal-01674568
Contributeur : François Hild <>
Soumis le : mercredi 3 janvier 2018 - 11:03:50
Dernière modification le : lundi 12 novembre 2018 - 10:58:35
Document(s) archivé(s) le : jeudi 3 mai 2018 - 07:19:05

Fichier

JSA2018-ccsd.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Collections

ENS-CACHAN | INSTITUT-TELECOM | PSL | ENSMP | UNIV-PARIS-SACLAY | PARISTECH | ENSMP_MAT

Citation

Ante Buljac, Thibault Taillandier-Thomas, Lukas Helfen, Thilo Morgeneyer, François Hild. Evaluation of measurement uncertainties of digital volume correlation applied to laminography data. Journal of Strain Analysis for Engineering Design, SAGE Publications, 2018, 53, pp.49-65. 〈10.1177/0309324717748097〉. 〈hal-01674568〉

Exporter

BibTeX TEI DC DCterms EndNote

Partager

Métriques

Consultations de la notice

222

Téléchargements de fichiers

221

Contact

support.ccsd.cnrs.fr
hal.support@ccsd.cnrs.fr
Logo CCSD