3D Strain Mapping of Opaque Materials Using an Improved Digital Volumetric Speckle Photography Technique with X-Ray Microtomography
Digital volumetric speckle photography (DVSP) method has been used to strain investigation in opaque materials. In this paper, an improved DVSP algorithm is introduced, in which a multi-scale coarse–fine subset calculation process and a subvoxel shifting technique are applied to increase a...
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MDPI AG
2019-04-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/9/7/1418 |
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doaj-b7dfcfeaf96642a9852acb1d46c62d562020-11-25T00:50:03ZengMDPI AGApplied Sciences2076-34172019-04-0197141810.3390/app9071418app90714183D Strain Mapping of Opaque Materials Using an Improved Digital Volumetric Speckle Photography Technique with X-Ray MicrotomographyLingtao Mao0Haizhou Liu1Ying Zhu2Ziyan Zhu3Rui Guo4Fu-pen Chiang5State Key Laboratory of Coal Resources and Safe Mining, China University of Mining & Technology, Beijing 100083, ChinaSchool of Mechanics and Civil Engineering, China University of Mining & Technology, Beijing 100083, ChinaSchool of Mechanics and Civil Engineering, China University of Mining & Technology, Beijing 100083, ChinaSchool of Mechanics and Civil Engineering, China University of Mining & Technology, Beijing 100083, ChinaSchool of Mechanics and Civil Engineering, China University of Mining & Technology, Beijing 100083, ChinaLaboratory for Experimental Mechanics Research and Dept. of Mechanical Engineering, Stony Brook University, Stony Brook, NY 11794-2300, USADigital volumetric speckle photography (DVSP) method has been used to strain investigation in opaque materials. In this paper, an improved DVSP algorithm is introduced, in which a multi-scale coarse–fine subset calculation process and a subvoxel shifting technique are applied to increase accuracy. We refer to the new algorithm as Multi-scale and Subvoxel shifting Digital Volumetric Speckle Photography (MS-DVSP). The displacement and strain fields of a red sandstone cylinder exposed to uniaxial compression and a woven composite beam under three-point bending are mapped in detail. The characteristics of the interior deformation of the specimens are clearly depicted, thus elucidating the failure mechanism of the materials.https://www.mdpi.com/2076-3417/9/7/1418interior 3D deformationdigital volumetric speckle photographyX-ray microtomographydigital volume correlationred sandstonewoven composite beam |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Lingtao Mao Haizhou Liu Ying Zhu Ziyan Zhu Rui Guo Fu-pen Chiang |
| spellingShingle |
Lingtao Mao Haizhou Liu Ying Zhu Ziyan Zhu Rui Guo Fu-pen Chiang 3D Strain Mapping of Opaque Materials Using an Improved Digital Volumetric Speckle Photography Technique with X-Ray Microtomography Applied Sciences interior 3D deformation digital volumetric speckle photography X-ray microtomography digital volume correlation red sandstone woven composite beam |
| author_facet |
Lingtao Mao Haizhou Liu Ying Zhu Ziyan Zhu Rui Guo Fu-pen Chiang |
| author_sort |
Lingtao Mao |
| title |
3D Strain Mapping of Opaque Materials Using an Improved Digital Volumetric Speckle Photography Technique with X-Ray Microtomography |
| title_short |
3D Strain Mapping of Opaque Materials Using an Improved Digital Volumetric Speckle Photography Technique with X-Ray Microtomography |
| title_full |
3D Strain Mapping of Opaque Materials Using an Improved Digital Volumetric Speckle Photography Technique with X-Ray Microtomography |
| title_fullStr |
3D Strain Mapping of Opaque Materials Using an Improved Digital Volumetric Speckle Photography Technique with X-Ray Microtomography |
| title_full_unstemmed |
3D Strain Mapping of Opaque Materials Using an Improved Digital Volumetric Speckle Photography Technique with X-Ray Microtomography |
| title_sort |
3d strain mapping of opaque materials using an improved digital volumetric speckle photography technique with x-ray microtomography |
| publisher |
MDPI AG |
| series |
Applied Sciences |
| issn |
2076-3417 |
| publishDate |
2019-04-01 |
| description |
Digital volumetric speckle photography (DVSP) method has been used to strain investigation in opaque materials. In this paper, an improved DVSP algorithm is introduced, in which a multi-scale coarse–fine subset calculation process and a subvoxel shifting technique are applied to increase accuracy. We refer to the new algorithm as Multi-scale and Subvoxel shifting Digital Volumetric Speckle Photography (MS-DVSP). The displacement and strain fields of a red sandstone cylinder exposed to uniaxial compression and a woven composite beam under three-point bending are mapped in detail. The characteristics of the interior deformation of the specimens are clearly depicted, thus elucidating the failure mechanism of the materials. |
| topic |
interior 3D deformation digital volumetric speckle photography X-ray microtomography digital volume correlation red sandstone woven composite beam |
| url |
https://www.mdpi.com/2076-3417/9/7/1418 |
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