Evaluation of measurement uncertainties of digital volume correlation applied to laminography data
| Autor: | Lukas Helfen, Thilo F. Morgeneyer, Thibault Taillandier-Thomas, François Hild, Ante Buljac |
|---|---|
| Přispěvatelé: | Centre des Matériaux (MAT), MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Mécanique et Technologie (LMT), École normale supérieure - Cachan (ENS Cachan)-Centre National de la Recherche Scientifique (CNRS), European Synchrotron Radiation Facility (ESRF) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
02 engineering and technology
Kinematics Displacement (vector) [PHYS.MECA.MEMA]Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph] Optics Data acquisition 0203 mechanical engineering Uncertainty quantification Uncertainty quantication Physics business.industry Applied Mathematics Mechanical Engineering 3D reconstruction Detector 021001 nanoscience & nanotechnology Rigid body Synchrotron laminography 020303 mechanical engineering & transports Mechanics of Materials Modeling and Simulation Measurement uncertainty Digital Volume Correlation Kinematic measurements Resolution 0210 nano-technology business |
| Zdroj: | Journal of Strain Analysis for Engineering Design Journal of Strain Analysis for Engineering Design, SAGE Publications, 2018, 53, pp.49-65. ⟨10.1177/0309324717748097⟩ |
| ISSN: | 0309-3247 |
| DOI: | 10.1177/0309324717748097⟩ |
| Popis: | International audience; 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. |
| Databáze: | OpenAIRE |
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