Advertisement

High Performance Digital Volume Correlation

Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

We develop an Improved 3D digital volume correlatiion (DVC) technique to measure displacement and strain fields throughout the interior of a material. Our eventual goal is to perform DVC with resolution comparable to that achieved in @D DIC, with a correlation time that is commensurate with the image acquisition time .this would represent a significant improvement one the Current state-of the art available in the literature. Using an X-ray micro-CT scanner, we can resolve features at the 5 micron scale ,genarating 3D images with up ti=o 8 billion voxels. We compute twevle Degrees -of- freedom at each Generating #D images with up to * billion voxels. We compute twelve degrees-of -freedom at each correlation point and utilize tricubic spline interpolation to achieve high accuracy- For DVC the volume of data,number of Correlation points and work to solve each correlation point grow cubically. We therefore employ parallel computing to handle this tremendous increase in computational and memory requirements .We demonstrable the application of DVC using an artificial deformation of actuall PDMS samples with empedded particles forming an internal Pattern.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© The Society for Experimental Mechanics, Inc. 2013

Authors and Affiliations

  1. 1.Department of Computer ScienceUnivercity Of lllinoisUrbanaUSA
  2. 2.Department of Aerospace EngineeringUniversity Of lllinoisUrbanaUSA

Personalised recommendations