Measuring and testing – With fluid pressure – Leakage
Patent
1990-04-02
1991-10-15
Chapman, John
Measuring and testing
With fluid pressure
Leakage
73 37, 73 40, G01M 332
Patent
active
050563564
ABSTRACT:
A fluid injection method of nondestructive testing for bonding between two layers of material, at least one of which is penetrable is presented. One or two fluid injection members are inserted at selected locations along the penetrable material to the bond line between the materials. In the single injection member test, a fluid under known pressure is injected through the injection member to the bond line. The flow is measured at several locations and an average flow rate under satisfactory bonding conditions is noted. Any flow rates in excess of some fixed amount above this established norm is considered unsatisfactory. In the two injection member test. The two members are adjacently inserted through the material to the bond line and a fluid under known pressure is injected from one injection member to the bond line. If a disbond exists between the two members, the second member receives fluid from the first at the bond line. If any amount of fluid is received by the second member, a non-bond condition is indicated. Various pressures are chosen depending on injection member size, material thickness, type of penetrable material, etc.
REFERENCES:
patent: 2403897 (1946-07-01), Aller
patent: 3893332 (1975-07-01), Dolan et al.
patent: 3918291 (1975-11-01), Pauly et al.
patent: 4078421 (1978-03-01), Gastaldo et al.
patent: 4350038 (1982-09-01), Soncrant
patent: 4364261 (1982-12-01), Askwith et al.
patent: 4776206 (1988-10-01), Armstrong et al.
patent: 4930341 (1990-06-01), Euteneuer
Kuhns David R.
O'Barr Gerald L.
Chapman John
Duncan John R.
General Dynamics Corporation Space Systems Division
Gilliam Frank D.
Miller Craig
LandOfFree
Nondestructive testing of penetrable material bond interfaces does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Nondestructive testing of penetrable material bond interfaces, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nondestructive testing of penetrable material bond interfaces will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-982123