Volume 25 Issue 2
Apr 2015
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MA Yun, ZHANG Yi, LI Jia-Bo, CAI Ling-Cang, LI Jian-Feng, WANG Xiang, WENG Ji-Dong, LI Jun, JING Qiu-Min, . Sound Velocity Measurement of Mesoscale Objects Using Laser Ultrasonics Technique[J]. Chinese Journal of High Pressure Physics, 2011, 25(2): 128-132 . doi: 10.11858/gywlxb.2011.02.006
Citation: MA Yun, ZHANG Yi, LI Jia-Bo, CAI Ling-Cang, LI Jian-Feng, WANG Xiang, WENG Ji-Dong, LI Jun, JING Qiu-Min, . Sound Velocity Measurement of Mesoscale Objects Using Laser Ultrasonics Technique[J]. Chinese Journal of High Pressure Physics, 2011, 25(2): 128-132 . doi: 10.11858/gywlxb.2011.02.006

Sound Velocity Measurement of Mesoscale Objects Using Laser Ultrasonics Technique

doi: 10.11858/gywlxb.2011.02.006
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  • Corresponding author: MA Yun
  • Received Date: 03 Mar 2010
  • Rev Recd Date: 05 May 2010
  • Publish Date: 15 Apr 2011
  • A laser-based ultrasound system was designed and built to measure the sound velocity of mesoscale (tens of micrometer- to millimeter-sized) objects. The system uses a Q-switch laser with 6.3 ns pulse width for excitation of broadband ultrasonic waves, and an optical fiber displacement interferometer for detection. The longitudinal acoustic wave velocities of the copper foils with different thicknesses were presented, which exhibit a relatively high degree of accuracy.

     

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