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22 September 1983 Ultrasonic Flaw Detection And Sizing For Quantitative Nondestructive Evaluation
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Proceedings Volume 0413, Inverse Optics I; (1983)
Event: 1983 Technical Symposium East, 1983, Arlington, United States
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.
© (1983) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
B. DeFacio "Ultrasonic Flaw Detection And Sizing For Quantitative Nondestructive Evaluation", Proc. SPIE 0413, Inverse Optics I, (22 September 1983);

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