Artifact Correction for DVC Measurements Using a Laboratory X‐Ray Source
Résumé
The effects of temperature elevation of the X-ray tube of a lab tomograph during image acquisition are analyzed in terms of their induced biases for Digital Volume Correlation (DVC) from a series of reconstructed volumes acquired successively. Spurious dilatational strains are induced by temperature variations in the tomograph. If not accounted for, any quantitative kinematic measurement is impossible for strain levels below 0.5%. When corrected, it is possible to determine the elastic parameters of nodular graphite cast iron.
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