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I need to buy polarised transducers

  1. Oct 13, 2005 #1
  2. jcsd
  3. Oct 14, 2005 #2

    berkeman

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    Staff: Mentor

  4. Oct 14, 2005 #3

    Astronuc

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    Ah, not so! While is virtually impossible to generate shear waves in gases, shear waves are possible in liquids and solids, or basically any elastic material.

    Sound can be induced as shear waves in addition to longitudinal waves. And there are hybrid waves (Lamb waves). All these are well known in the application of ultrasonics in non-destructive testing and imaging.

    For example -
    Ultrasonic methods for characterizing polymeric material
    http://pubs.acs.org/hotartcl/ci/00/feb/alig.html

    Generation of Horizontally Polarized Shear Waves with EMAT Transducers
    http://www.ndt.net/article/0398/huebsch/hueb.htm

    I'll see if I can answer the OP later.
     
  5. Oct 14, 2005 #4

    berkeman

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    Staff: Mentor

    No kidding? I never knew that. Thanks, Astro, I learn something new every day, especially here on PF.:biggrin:
     
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