Location

La Jolla, CA

Start Date

1979 12:00 AM

Description

For ultrasonic testing (pulse-echo or tandem) the surface of a test piece is scanned by a probe or a probe array. Time-delay and amplitude for each pulse, locus of incidence, reflector inside the beam and wave path, are measured. Shape and position of reflectors are reconstructed from time-delay locus curves. In addition, isolated amplitude-locus curves derived from measurements are compared to calculations for several reflector modes. The best fitting model is selected. Diameter or width and inclination are determined.

Book Title

Proceedings of the ARPA/AFML Review of Progress in Quantitative NDE

Chapter

12. Techniques for Flaw Reconstruction Using Short Wavelengths

Pages

441-446

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Ultrasonic Testing - Reconstruction of Reflectors from Time-Delay and Amplitude-Locus Curves

La Jolla, CA

For ultrasonic testing (pulse-echo or tandem) the surface of a test piece is scanned by a probe or a probe array. Time-delay and amplitude for each pulse, locus of incidence, reflector inside the beam and wave path, are measured. Shape and position of reflectors are reconstructed from time-delay locus curves. In addition, isolated amplitude-locus curves derived from measurements are compared to calculations for several reflector modes. The best fitting model is selected. Diameter or width and inclination are determined.