Journal
STRAIN
Volume 42, Issue 2, Pages 69-80Publisher
WILEY-BLACKWELL
DOI: 10.1111/j.1475-1305.2006.00258.x
Keywords
Brazilian disk test; correlation algorithm; integrated approach; kinematic measurements; photomechanics
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The current state of the art of digital image correlation, where displacements can be determined for values less than one pixel, enables one to better characterise the behaviour of materials and the response of structures to external loads. A general presentation of the extraction of displacement fields from pictures taken at different instants during an experiment is given. Different strategies can be followed to determine subpixel displacements. New identification procedures are then devised making use of full-field measurements. A priori or a posteriori routes can be followed. They are illustrated on the analysis of a Brazilian disk test.
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