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      • Department of Electrical and Electronics Engineering
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      Characterization of layered materials by the lamb wave lens

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      Author(s)
      Atalar, Abdullah
      Köymen, Hayrettin
      Değertekin, F. Levent
      Date
      1990
      Source Title
      Proceedings of the 1990 IEEE Ultrasonics Symposium
      Print ISSN
      0090-5607
      Publisher
      IEEE
      Pages
      359 - 362
      Language
      English
      Type
      Conference Paper
      Item Usage Stats
      276
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      230
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      Abstract
      The Lamb wave lens is a type of lens that can replace the conventional lens of an acoustic microscope for some applications. When it insonifies a layered solid structure, it excites a single mode in the structure, provided that the frequency is properly adjusted. Measuring the return signal as a function of frequency results in a characteristic curve showing the excited modes. Since the number of excited modes, the frequencies at which they are excited, and the efficiency of excitation are highly dependent on the elastic and physical parameters of the layered solid, a characterization method emerges. The authors describe this characterization method for the layered structures using the Lamb wave lens. Theoretical and experimental results are presented.
      Keywords
      Lenses
      Ultrasonic waves
      Lamb wave lenses
      Lamb waves
      Layered materials
      Permalink
      http://hdl.handle.net/11693/27828
      Published Version (Please cite this version)
      https://doi.org/10.1109/ULTSYM.1990.171386
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      • Department of Electrical and Electronics Engineering 3863
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