Response of surface acoustic wave imaging systems to cylindrical inhomogeneities
Date
1988-10Source Title
IEEE 1988 Ultrasonics Symposium Proceedings
Publisher
IEEE
Pages
591 - 594
Language
English
Type
Conference PaperItem Usage Stats
263
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145
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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 wavesResponse surface methodology
Acoustic waves
Acoustic imaging
Surface cracks
Focusing
Scattering
Voltage
Surface waves
Acoustic materials
Permalink
http://hdl.handle.net/11693/50808Published Version (Please cite this version)
https://doi.org/10.1109/ULTSYM.1988.49445Collections
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