BACK-PROJECTION ALGORITHMS FOR A COMPUTER-CONTROLLED SCANNING LASER ACOUSTIC MICROSCOPE.

R. K. Mueller; W. P. Robbins; E. Rudd; Z. Q. Zhou

doi:10.1007/978-1-4684-5320-1_34

BACK-PROJECTION ALGORITHMS FOR A COMPUTER-CONTROLLED SCANNING LASER ACOUSTIC MICROSCOPE.

R. K. Mueller, W. P. Robbins, E. Rudd, Z. Q. Zhou

Electrical and Computer Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In this paper we evaluate the capability of a scanning laser acoustic microscope (SLAM) to produce images of buried flaws or artifacts in objects which support both shear and compressional waves. First we describe a method of imaging near-surface flaws or artifacts by surface wave insonification, and give some experimental results. We then show that a conventional SLAM does not acquire sufficient data for the back-projection imaging in solids. However appropriate spatial filtering of the acquired data can produce acceptable quasi-back-projected images of deeply buried flaws. This is shown analytically and demonstrated with some images obtained with a computer-controlled SLAM developed in our laboratory.

Original language	English (US)
Title of host publication	Acoustical Imaging
Subtitle of host publication	Proceedings of the International Symposium
Publisher	Plenum Press, USA & London
Pages	383-392
Number of pages	10
ISBN (Print)	0306425653, 9780306425653
DOIs	https://doi.org/10.1007/978-1-4684-5320-1_34
State	Published - 1987

Publication series

Name	Acoustical Imaging: Proceedings of the International Symposium
Volume	15
ISSN (Print)	0270-5117

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10.1007/978-1-4684-5320-1_34

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Mueller, R. K., Robbins, W. P., Rudd, E., & Zhou, Z. Q. (1987). BACK-PROJECTION ALGORITHMS FOR A COMPUTER-CONTROLLED SCANNING LASER ACOUSTIC MICROSCOPE. In Acoustical Imaging: Proceedings of the International Symposium (pp. 383-392). (Acoustical Imaging: Proceedings of the International Symposium; Vol. 15). Plenum Press, USA & London. https://doi.org/10.1007/978-1-4684-5320-1_34

BACK-PROJECTION ALGORITHMS FOR A COMPUTER-CONTROLLED SCANNING LASER ACOUSTIC MICROSCOPE. / Mueller, R. K.; Robbins, W. P.; Rudd, E. et al.
Acoustical Imaging: Proceedings of the International Symposium. Plenum Press, USA & London, 1987. p. 383-392 (Acoustical Imaging: Proceedings of the International Symposium; Vol. 15).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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AB - In this paper we evaluate the capability of a scanning laser acoustic microscope (SLAM) to produce images of buried flaws or artifacts in objects which support both shear and compressional waves. First we describe a method of imaging near-surface flaws or artifacts by surface wave insonification, and give some experimental results. We then show that a conventional SLAM does not acquire sufficient data for the back-projection imaging in solids. However appropriate spatial filtering of the acquired data can produce acceptable quasi-back-projected images of deeply buried flaws. This is shown analytically and demonstrated with some images obtained with a computer-controlled SLAM developed in our laboratory.

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BACK-PROJECTION ALGORITHMS FOR A COMPUTER-CONTROLLED SCANNING LASER ACOUSTIC MICROSCOPE.

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