Adjustable radius apparatus for calibrating ultrasonic transduce

Details Adjustable radius apparatus for calibrating ultrasonic transduce Adjustable radius apparatus for calibrating ultrasonic transduce

1984-02-27

1986-03-18

Chin, Peter

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

367 13, G01C 2500

Patent

active

045760349

ABSTRACT:
Calibration apparatus for calibrating an ultrasonic transducer array by moving it along an arcuate calibration test member, includes four upright posts interconnected by a rectangular carriage which is slidably movable vertically along the posts. A horizontal pivot shaft is rotatably mounted on the carriage. Fixed to the shaft and depending therefrom are two pendulum arms, interconnected at their lower ends by a pair of cross bars on which is slidably mounted a mounting block. An attachment rod is vertically slidably movable in the mounting block and carries a coupling joint at its lower end for mounting the transducer array. A reversible gearmotor drives the pivot shaft through a chain and sprocket assembly in an oscillating motion. Backlash in the gear train is reduced by a bias weight.

REFERENCES:
patent: 3248933 (1966-05-01), Stebbins
patent: 3480002 (1969-11-01), Flaherty et al.
patent: 3678736 (1972-07-01), May
patent: 3765229 (1973-10-01), Spencer et al.
patent: 3894425 (1975-07-01), Winters et al.
patent: 3952581 (1976-04-01), Gottelt
patent: 3990300 (1976-11-01), Kossoff
patent: 4117733 (1978-10-01), Gugel
patent: 4385523 (1983-05-01), Gugel et al.
"Setup for Ultrasonic Inspection of Welded Joints in Annular Blanks," Soviet Journal of Nondes. Testing, vol. 10, No. 3, pp. 356-358 (May-Jun., 1974).

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