Pulsed TV holography and tomography for the study of transient waves in air |
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| Authors: | Xide Li, Per Gren, Anders W hlin,Staffan Schedin |
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| Affiliation: | a Department of Modern Mechanics and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China;b Division of Experimental Mechanics, Luleå University of Technology, SE-971 87 Luleå, Sweden |
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| Abstract: | Transient waves in air are recorded and reconstructed using pulsed TV holography and computerized tomography (CT). Experiments are performed with an electrical discharge between two electrodes as the acoustic wave source. The free space wave-fronts and pressure fields are reconstructed. Waves reflected and diffracted by different obstacles are also recorded and reconstructed in three dimensions. Speckle averaging and image processing techniques are used to get the high quality projection fields needed for CT reconstruction. |
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| Keywords: | Tomography Pulsed TV holography Transient acoustic waves |
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