3D Deformation and Strain Analysis in Uniaxial Compressive Coal Using Digital Volumetric Speckle Photography

Xiu Yun Lian; Ling Tao Mao; Hui Ya Niu

doi:10.4028/www.scientific.net/AMM.782.341

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 7823D Deformation and Strain Analysis in Uniaxial...

3D Deformation and Strain Analysis in Uniaxial Compressive Coal Using Digital Volumetric Speckle Photography

Abstract:

Digital Volumetric Speckle Photography (DVSP), which is the extension of 2D digital speckle photography, is applied to measure the interior deformation and strain of the object by 2-step 3D FFT. For using FFT, DVSP has some advantages in computational efficiency. With the special loading setup for Micro-CT, the coal specimen under different uniaxial loadings is scanned, and the volumetric images are acquired. By using DVSP, the interior 3D displacements of the specimen are obtained, and then the equivalent strains and volumetric strains are estimated. Based on the interior displacement and strain mappings, the process of deformation or strain localization in the coal specimen is studied.

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Periodical:

Applied Mechanics and Materials (Volume 782)

Pages:

341-344

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.782.341

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Online since:

August 2015

Authors:

Xiu Yun Lian, Ling Tao Mao*, Hui Ya Niu

Keywords:

3D Deformation, CoAl, Deformation or Strain Localization, Digital Volumetric Speckle Photography, Micro-CT, Uniaxial Loading

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