3D Deformation and Strain Analysis in Uniaxial Compressive Coal Using Digital Volumetric Speckle Photography
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 strain, equivalent strain and volumetric strain are estimated.Based on the interior displacement and strain mappings, the process of deformation or strain localization in the coal specimen is studied.
3D deformation Digital Volumetric Speckle Photography Coal uniaxial loading deformation or strain localization Micro-CT
Lian Xiuyun Mao Lingtao
School of Mechanics & Civil Engineering, China University of Mining & Technology, Beijing 100083, Ch School of Mechanics & Civil Engineering, China University of Mining & Technology, Beijing 100083, Ch
国际会议
北京
英文
443-446
2014-10-19（万方平台首次上网日期，不代表论文的发表时间）