Measuring and testing – Vibration – By mechanical waves
Patent
1985-01-04
1985-12-17
Kreitman, Stephen A.
Measuring and testing
Vibration
By mechanical waves
73290B, 73290V, G01N 2904
Patent
active
045585970
ABSTRACT:
Apparatus for detecting failure of a surface tension screen disposed between a holding chamber and a main chamber of a tank includes a fixture for supporting the tank in desired test orientations, a drive mechanism on the fixture for rotating the tank and an ultrasonic transducer used in making a measurement with respect to the position of an interface between liquid and gas contained in the holding chamber of the tank. The holding and main chambers are tandemly arranged along a longitudinal axis of the tank and are each substantially filled by a liquid propellant with respective volumes of gas contained in each chamber. The fixture supports the tank in a first orientation with a nose of the tank pointing downwardly and tank longitudinal axis extending approximately 60.degree. above horizontal and to the right of vertical and in a second orientation with the tank nose pointing upwardly and tank longitudinal axis extending approximately 60.degree. above horizontal and to the left of vertical. Separate measurements are made after rotation of the tank in each of these orientations. These measurements are indicative of the volumes of gas in the holding chamber at the respective orientations. Comparison of the measurements provides an assessment of the integrity of the surface tension screen. If the measurements are significantly different, then this indicates that gas leakage has taken place across the screen and that the screen has therefore failed.
REFERENCES:
patent: 3019650 (1962-02-01), Worswick
patent: 3237451 (1966-03-01), Haeff
patent: 3266311 (1966-08-01), Andreasen et al.
patent: 3413847 (1968-12-01), Kraushaar
patent: 4090407 (1978-05-01), Shuler et al.
patent: 4144517 (1979-03-01), Baumoel
patent: 4159647 (1979-07-01), Paulsen et al.
patent: 4221004 (1980-09-01), Combs et al.
patent: 4501146 (1985-02-01), Greenhalgh
"Location of Pipe Obstructions Using Ultrasonic Testing", W. S. Burkle, Materials Evaluation, 39, pp. 931-933, (Sep. 1981).
Chang Yi M.
Fenwick James R.
Kreitman Stephen A.
Scearce Bobby D.
Singer Donald J.
The United States of America as represented by the Secretary of
LandOfFree
Surface tension screen failure detection method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Surface tension screen failure detection method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface tension screen failure detection method and apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2169409