Application of 3D image correlation for full-field transient plate deformation measurements during blast loading |
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| Authors: | Vikrant Tiwari Michael A. Sutton S.R. McNeill Shaowen Xu Xiaomin Deng William L. Fourney Damien Bretall |
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| Affiliation: | 1. Department of Mechanical Engineering, University of South Carolina, Columbia, SC 29208, USA;2. Department of Mechanical Engineering, University of Maryland, MD 20742, USA |
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| Abstract: | A high-speed stereo-vision system is employed to quantify dynamic material response during buried blast loading. Deformation measurements obtained using 3D image correlation of synchronized, patterned stereo-vision images obtained with an inter-frame time in the range 16 μs ≤ t ≤ 40 μs indicate that (a) buried blast loading initially induces highly localized material response directly under the buried blast location, with severity of the blast event a strong function of depth of explosive burial, (b) for relatively shallow (deep) depth of explosive burial, plate surface velocities and accelerations exceed 220 m s−1 (100 m s−1) and 6 × 106 m s−2 (1.5 × 106 m s−1) during the first 30 μs (80 μs) after detonation, respectively. |
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| Keywords: | 3D digital image correlation CMOS, CCD and image registration High-speed stereo-imaging Blast loading and full-field deformation measurements Transient material response and high strain rate measurements |
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