Ultrasonic crack sizing method

Details Ultrasonic crack sizing method Ultrasonic crack sizing method

1989-03-16

1992-06-30

Arana, Louis M.

Measuring and testing

Vibration

By mechanical waves

G01N 2904

Patent

active

051252724

ABSTRACT:
An ultrasonic tip diffraction technique for determining the depth of a surface-opening crack is disclosed. Longitudinal ultrasonic waves are transmitted parallel to and along the crack and measurement of the time of travel of the waves diffracted at the tip of the crack is employed to determine the depth of the crack.

REFERENCES:
patent: 4274288 (1981-06-01), Tittmann et al.
patent: 4522064 (1985-06-01), McMillan
patent: 4658649 (1987-04-01), Brook
Achenbach, J. D., Wave Propagation in Elastic Solids, North Holland Publishing Co., 1973.
EPRI, U.-T. Operator Training for Planar Flaw Sizing, EPRI Nondestructive Evaluation Center, 1300 Harris Blvd., P.O. Box 217097, Charlotte, N.C. 28221, Aug. 1984.

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