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      • Department of Electrical and Electronics Engineering
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      Response of surface acoustic wave imaging systems to cylindrical inhomogeneities

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      Author(s)
      Gunalp, N.
      Baygun, B.
      Surucu, F.
      Atalar, Abdullah
      Date
      1988-10
      Source Title
      IEEE 1988 Ultrasonics Symposium Proceedings
      Publisher
      IEEE
      Pages
      591 - 594
      Language
      English
      Type
      Conference Paper
      Item Usage Stats
      263
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      Abstract
      The authors present a theory to predict the response of a SAW (surface acoustic wave) imaging system. In particular, they calculate the response to cylindrical cavities as a function of cavity position with respect to the focus point. The calculations indicated a high leak rate material will result in a better resolution in the y-direction. The theory also predicts an enhancement in the received signal level when the cylinder circumference equals the SAW wavelength. The images of cylinders obtained with such systems will indicate the size of the cylinders correctly at 20 dB below peak value as long as the cylinder diameter is larger than about a Rayleigh wavelength. For small cylinders the received peak amplitude can be used to determine the size of the cylinder.
      Keywords
      Surface acoustic waves
      Response surface methodology
      Acoustic waves
      Acoustic imaging
      Surface cracks
      Focusing
      Scattering
      Voltage
      Surface waves
      Acoustic materials
      Permalink
      http://hdl.handle.net/11693/50808
      Published Version (Please cite this version)
      https://doi.org/10.1109/ULTSYM.1988.49445
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      • Department of Electrical and Electronics Engineering 3863
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