Measuring and testing – With fluid pressure – Dimension – shape – or size
Patent
1980-08-11
1982-04-27
Myracle, Jerry W.
Measuring and testing
With fluid pressure
Dimension, shape, or size
G01N 2900
Patent
active
043264050
ABSTRACT:
An apparatus is provided for testing of bonded laminates which include a substrate and a face sheet bonded thereto. The apparatus has at least one air nozzle arranged to direct high velocity air in a direction generally radially outward of the circular pattern at a shallow angle to the face sheet of the laminate. A detection plate on the examining surface of the device is encircled by the air nozzles. The detection plate has associated therewith means for detecting when the face sheet of the laminate is deflected toward the detection plate, indicating that the laminate is not bonded to the substrate in that area. High pressure air is introduced through the air nozzles thereby producing an air cushion between the examining surface of the apparatus and the face sheet of the laminate and simultaneously producing a vacuum in the area between the detection plate and the face sheet, whereby the face sheet will be deflected toward the detection plate in an area where the face sheet is not bonded to the substrate.
REFERENCES:
patent: 2901906 (1959-09-01), Emmons
patent: 3460375 (1969-08-01), Auger
patent: 4043179 (1977-08-01), Ingle, Jr.
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