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Towards Measuring Intergranular Force Transmission Using Confocal Microscopy and Digital Volume Correlation

Mac Donald, Kimberley and Ravichandran, Guruswami (2017) Towards Measuring Intergranular Force Transmission Using Confocal Microscopy and Digital Volume Correlation. In: Advancement of Optical Methods in Experimental Mechanics. Vol.3. Springer , Cham, Switzerland, pp. 85-88. ISBN 978-3-319-63027-4.

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We aim to show the feasibility of using confocal microscopy imaging techniques for Digital Volume Correlation (DVC) and analysis of granular mechanics experiments. The first part of this study validates the DVC and confocal microscopy imaging methods for a general problem of uniaxial compression of continuous media. The second part investigates the specific problem of granular mechanics. Intergranular force transmission will be analyzed from 3D image stacks captured using confocal microscopy. DVC methods will be used to analyze the full 3D grain motions and deformations. The intergranular forces will be determined inversely using the Granular Element Method (GEM). Preliminarily results show that confocal microscopy is a useful volumetric imaging method for DVC analyses and shows promise in furthering the study of intergranular force chains and shear bands.

Item Type:Book Section
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Ravichandran, Guruswami0000-0002-2912-0001
Additional Information:© 2018 The Society for Experimental Mechanics, Inc. First Online: 04 November 2017. The project depicted is sponsored by the Department of the Defense, Defense Threat Reduction Agency (HDTRA1-12-0041). The content of the information does not necessarily reflect the position or the policy of the federal government, and no official endorsement should be inferred. This material is based upon work supported by the National Science Foundation Graduate Research Fellowship under Grant No. DGE-1144469. Imaging was performed in the Biological Imaging Facility, with the support of the Caltech Beckman Institute and the Arnold and Mabel Beckman Foundation.
Funding AgencyGrant Number
Defense Threat Reduction Agency (DTRA)HDTRA1-12-0041
NSF Graduate Research FellowshipDGE-1144469
Caltech Beckman InstituteUNSPECIFIED
Arnold and Mabel Beckman FoundationUNSPECIFIED
Subject Keywords:Confocal microscopy; Digital Volume Correlation (DVC); Granular mechanics; Intergranular forces; Shear bands
Record Number:CaltechAUTHORS:20171106-135543296
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:82987
Deposited By: Tony Diaz
Deposited On:07 Nov 2017 15:55
Last Modified:29 Apr 2020 16:44

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