Method for detecting and characterizing flaws in engineering mat

Details Method for detecting and characterizing flaws in engineering mat Method for detecting and characterizing flaws in engineering mat

1994-07-01

1996-08-27

Williams, Hezron E.

Measuring and testing

Vibration

By mechanical waves

73620, 364508, 364507, 367104, G01N 2906

Patent

active

055490026

ABSTRACT:
A method for detecting and characterizing flaws in an object having an arbitrary-shaped geometry. The present invention uses a synthetic aperture focusing technique (SAFT) which enables maximum aperture imaging. Maximum aperture imaging is attained by determining whether a plurality of reconstruction points within an object are in the width of a transmitted ultrasonic sound wave.

REFERENCES:
patent: 4252022 (1981-02-01), Hurwitz
patent: 4597292 (1986-07-01), Fujii et al.
patent: 4730495 (1988-03-01), Green
patent: 4841489 (1989-06-01), Ozaki et al.
patent: 4862892 (1989-09-01), Green
patent: 5065763 (1991-11-01), Green et al.
"A New System for Real-Time Synthetic Aperture Ultrasonic Imaging" by Yoshihiko Ozaki, et el, IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 35, No. 6, Nov. 1988, pp. 828-838.

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