A new digital image correlation algorithm for whole-field displacement measurement
Autor: | Su, C., Anand, Lallit |
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Rok vydání: | 2003 |
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Druh dokumentu: | Článek |
Popis: | We have developed a new digital image correlation (DIC) algorithm for non-contact, two-dimensional, whole-field displacement and strain measurement. Relative to existing algorithms, our algorithm substantially reduces the calculation expense by using neighborhood information while processing the data to determine the displacement field in a sub-region of interest. The new algorithm also uses higher-order interpolations of the displacement field, allowing for better accuracy in estimating strain distributions when the deformation field is non-homogeneous. Numerically-generated digital images are used to show that the new algorithm accurately reproduces the imposed displacement fields. The algorithm is also tested on actual images from deformed specimens from a variety of experiments, and shown to perform satisfactorily. Singapore-MIT Alliance (SMA) |
Databáze: | Networked Digital Library of Theses & Dissertations |
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