Holographic inspection technique

Optics: measuring and testing – By particle light scattering – With photocell detection

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73656, G01B 9029

Patent

active

044088817

ABSTRACT:
A nondestructive testing technique for examining the integrity of a bonded joint consists of forming a time-average hologram of the object while it is being vibrated at a number of frequencies generated at random within a defined bandwidth.

REFERENCES:
patent: 3548643 (1970-12-01), Leith et al.
patent: 3572936 (1971-03-01), Johnson et al.
patent: 3645129 (1972-02-01), Grant
Edenborough et al., "Holographic Inspection for Thin Cover Sheet Bond Quality on Turbine Components", Materials Evaluation, 39, pp. 643-646, Jun. 1981.

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