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Proceedings Paper

Ultrasonic Flaw Detection And Sizing For Quantitative Nondestructive Evaluation
Author(s): B. DeFacio
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Paper Abstract

The frequency-domain Neumann-Born approximation is used to study the determination of the radii and material parameters of spherical flaws. Bandwidth limiting and the effects of noise are studied. An eikonal approximation by Rose and DeFacio was also used. Only the reconstruction using a single scattering angle is addressed. Backscattered amplitudes (θ = 180°) and near forward scattering amplitudes at θ = 30° were not as successful as θ = 60° data. The radii were determined better than material parameters and in the case of a single backscatter with 5% noise and fairly strong scattering no radius was determined.

Paper Details

Date Published: 22 September 1983
PDF: 8 pages
Proc. SPIE 0413, Inverse Optics I, (22 September 1983); doi: 10.1117/12.935835
Show Author Affiliations
B. DeFacio, University of Missouri (United States)

Published in SPIE Proceedings Vol. 0413:
Inverse Optics I
Anthony J. Devaney, Editor(s)

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