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Theoretical and Experimental Study of Time Reversal in Cubic Crystals |
| LU Ming-Hui;ZHANG Bi-Xing;WANG Cheng-Hao |
| Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080 |
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| Cite this article: |
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LU Ming-Hui, ZHANG Bi-Xing, WANG Cheng-Hao 2004 Chin. Phys. Lett. 21 1766-1769 |
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Abstract The self-adaptive focusing of the time reversal in anisotropic media is studied theoretically and experimentally. It is conducted for the compressional wave field in the cubic crystal silicon. The experimental result is in agreement with our theoretical analysis. The focusing gain and the displacement distributions of the time reversal field are analysed in detail. It is shown that the waves from different elements of the transducer array arrive at the original place of the source simultaneously after the time reversal operation. The waveform distortions caused by the velocity anisotropy can automatically be compensated for after the time reversal processing.
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| Keywords:
43.20.+g
43.40.+s
43.60.+d
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Published: 01 September 2004
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| PACS: |
43.20.+g
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(General linear acoustics)
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43.40.+s
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(Structural acoustics and vibration)
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43.60.+d
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(Acoustic signal processing)
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