Interior deformation measurements using X-Ray tomography and digital volume correlation

Abstract

Volumetric Digital Image Correlation (VDIC) or Digital Volumetric Correlation (DVC) is becoming more widely used in biological research, micro-structural studies in materials, geological sciences and other fields. With DVC, volumetric image sets obtained by X-Ray tomography, magnetic resonance imaging or confocal microscopy can be analyzed to obtain volumetric deformation measurements throughout the interior of a specimen, provided that there is sufficient contrast (local changes in contrast) within the interior region of interest. Using software developed by the authors [1], results from a series of experimental studies on a small circular disk specimen are presented that demonstrate the accuracy of the method when adequate contrast exists. © The Society for Experimental Mechanics, Inc. 2014.