TWO-DIMENSIONAL IMAGING THEORY OF SURFACE DISCONTINUITIES WITH THE SCANNING ACOUSTIC MICROSCOPE.

Michael Geoffrey Somekh; H. L. Bertoni; G. A D Briggs; N. J. Burton

TWO-DIMENSIONAL IMAGING THEORY OF SURFACE DISCONTINUITIES WITH THE SCANNING ACOUSTIC MICROSCOPE.

Michael Geoffrey Somekh, H. L. Bertoni, G. A D Briggs, N. J. Burton

Research output: Journal article publication › Journal article › Academic research › peer-review

Abstract

This paper discusses theoretical aspects of the V(z) response of the scanning acoustic microscope (s. a. m. ) when used to examine specimens with lateral discontinuities. The problem is introduced in terms of a simple ray model to establish a physical picture of the processes involved. At an interface between media with different elastic properties, the contrast is affected not only by the scattering properties of the boundary but also by the very fact that surface waves must propagate in media with different elastic properties. This effect can provide a powerful contrast mechanism which enables one to understand the light to dark contrast reversals often observed at grain boundaries in polycrystalline specimens at different values of defocus.

Original language	English
Pages (from-to)	29-51
Number of pages	23
Journal	Proceedings of The Royal Society of London, Series A: Mathematical and Physical Sciences
Volume	401
Issue number	1820
Publication status	Published - 9 Sept 1985
Externally published	Yes

ASJC Scopus subject areas

General Engineering

Cite this

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title = "TWO-DIMENSIONAL IMAGING THEORY OF SURFACE DISCONTINUITIES WITH THE SCANNING ACOUSTIC MICROSCOPE.",

abstract = "This paper discusses theoretical aspects of the V(z) response of the scanning acoustic microscope (s. a. m. ) when used to examine specimens with lateral discontinuities. The problem is introduced in terms of a simple ray model to establish a physical picture of the processes involved. At an interface between media with different elastic properties, the contrast is affected not only by the scattering properties of the boundary but also by the very fact that surface waves must propagate in media with different elastic properties. This effect can provide a powerful contrast mechanism which enables one to understand the light to dark contrast reversals often observed at grain boundaries in polycrystalline specimens at different values of defocus.",

author = "Somekh, {Michael Geoffrey} and Bertoni, {H. L.} and Briggs, {G. A D} and Burton, {N. J.}",

year = "1985",

month = sep,

day = "9",

language = "English",

volume = "401",

pages = "29--51",

journal = "Proceedings of The Royal Society of London, Series A: Mathematical and Physical Sciences",

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}

TWO-DIMENSIONAL IMAGING THEORY OF SURFACE DISCONTINUITIES WITH THE SCANNING ACOUSTIC MICROSCOPE. / Somekh, Michael Geoffrey; Bertoni, H. L.; Briggs, G. A D et al.
In: Proceedings of The Royal Society of London, Series A: Mathematical and Physical Sciences, Vol. 401, No. 1820, 09.09.1985, p. 29-51.

Research output: Journal article publication › Journal article › Academic research › peer-review

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AU - Somekh, Michael Geoffrey

AU - Bertoni, H. L.

AU - Briggs, G. A D

AU - Burton, N. J.

PY - 1985/9/9

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AB - This paper discusses theoretical aspects of the V(z) response of the scanning acoustic microscope (s. a. m. ) when used to examine specimens with lateral discontinuities. The problem is introduced in terms of a simple ray model to establish a physical picture of the processes involved. At an interface between media with different elastic properties, the contrast is affected not only by the scattering properties of the boundary but also by the very fact that surface waves must propagate in media with different elastic properties. This effect can provide a powerful contrast mechanism which enables one to understand the light to dark contrast reversals often observed at grain boundaries in polycrystalline specimens at different values of defocus.

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JO - Proceedings of The Royal Society of London, Series A: Mathematical and Physical Sciences

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TWO-DIMENSIONAL IMAGING THEORY OF SURFACE DISCONTINUITIES WITH THE SCANNING ACOUSTIC MICROSCOPE.

Abstract

ASJC Scopus subject areas

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