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Interaction of Shock Waves in Cement Mortar Plate Investigated by the Digital Speckle Correlation Method |
LI Xu-Dong1, LIU Kai-Xin1, ZHANG Guang-Sheng2, WEN Shang-Gang2, TAN
Fu-Li2 |
| 1LTCS and Department of Mechanics and Aerospace Engineering, College of Engineering, Peking University, Beijing 1008712Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900 |
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| Cite this article: |
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LI Xu-Dong, LIU Kai-Xin, ZHANG Guang-Sheng et al 2008 Chin. Phys. Lett. 25 2965-2968 |
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Abstract Interaction of shock waves in cement mortar plate is studied by digital speckle correlation method and digital high-speed photography technique. When the plates were destroyed by two detonators exploding at the same time, variation of shock wave field is obtained. Experimental results show that the interaction of shock waves will result in a nonlinear huge increase of local normal strain, leading to large deformation and serious destruction. However, the occurrence of this strongly nonlinear phenomenon sensitively depends on the interval between detonators, and it will only appear when the interval is smaller than the diameter of the region where shock waves exist
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| Keywords:
62.50.+p
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Received: 17 February 2008
Published: 25 July 2008
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