Multi-Scale Displacement Field Measurements of Compressed Mineral Wool Samples by Digital Image Correlation

Abstract : We propose a multi-scale approach to determine the displacement field by digital image correlation. The displacement field is first estimated on a coarse resolution image and progressively finer details are introduced in the analysis as the displacement is more and more securely and accurately determined. Such a scheme has been developed to increase the robustness, accuracy and reliability of the image matching algorithm. The procedure is used on two different types of examples. The first one deals with a representative image that is deformed exactly to assess the intrinsic performances. In particular, the maximum measurable strain is determined. The second case deals with a series of pictures taken during compression experiments on mineral wool samples. The different steps of the procedure are analyzed and their respective role is assessed. Both reflection and transmission images are tested.
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https://hal.archives-ouvertes.fr/hal-00002901
Contributor : François Hild <>
Submitted on : Monday, September 20, 2004 - 2:21:57 PM
Last modification on : Thursday, May 16, 2019 - 1:31:10 AM
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  • HAL Id : hal-00002901, version 1

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François Hild, Bumedijen Raka, Maud Baudequin, Stéphane Roux, Florence Cantelaube. Multi-Scale Displacement Field Measurements of Compressed Mineral Wool Samples by Digital Image Correlation. Applied optics, Optical Society of America, 2002, IP 41, pp.6815-6828. ⟨hal-00002901⟩

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