期刊
EXPERIMENTAL MECHANICS
卷 51, 期 6, 页码 959-970出版社
SPRINGER
DOI: 10.1007/s11340-010-9397-4
关键词
Quantitative kinematic measurements; Reconstruction artifacts; Thermal expansion; X-ray computed microtomography
资金
- Agence Nationale de la Recherche [ANR-09-BLAN-0009-01]
- Agence Nationale de la Recherche (ANR) [ANR-09-BLAN-0009] Funding Source: Agence Nationale de la Recherche (ANR)
The effects of three artifacts (reconstruction, beam hardening and temperature of the X-ray tube) associated with the use of a lab tomograph are analyzed in terms of their induced biases for Digital Volume Correlation (DVC) from a series of reconstructed volumes acquired successively. The most detrimental effect is due to spurious dilatational strains induced by temperature variations in the tomograph. If they are not accounted for, any quantitative kinematic measurement is impossible for strain levels below 0.5%.
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