Wheel rim leak detection

Details Wheel rim leak detection Wheel rim leak detection

1988-07-21

1989-08-01

Levy, Stewart J.

Measuring and testing

With fluid pressure

Leakage

G01M 324

Patent

active

048523909

ABSTRACT:
Method and apparatus for testing leak integrity of a workpiece such as a wheel rim in which the rim is positioned within a air-tight housing with the axial rim edges in sealing engagement with opposed wall portions of the housing so as to form first and second chambers within the housing internally and externally of the rim. One of such chambers is supplied with air under pressure from a tank which is precharged during the workpiece transfer process. Microphones are positioned in the other chamber for detecting leakage of air through the rim as a function of intensity of ultrasonic radiation emitted thereby. Gross leaks are detected by connecting the pressurized chamber to an air supply through a orifice, and detecting ultrasonic radiation resulting from flow of make-up air through the orifice.

REFERENCES:
patent: 3266296 (1966-08-01), Hall
patent: 4523452 (1985-06-01), Brayman
patent: 4532795 (1985-08-01), Brayman et al.
patent: 4754638 (1988-07-01), Brayman et al.

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