Thermal measuring and testing – Temperature measurement – Combined with diverse art device
Patent
1992-10-19
1994-01-04
Yasich, Daniel M.
Thermal measuring and testing
Temperature measurement
Combined with diverse art device
73150A, 250334, 340600, 374 5, 374124, G01N 2500, G01K 114
Patent
active
052754898
ABSTRACT:
An apparatus and method for inspecting the bonding between a cell structure having a multiplicity of cells which are open at one end and bonded at an opposite end to a substrate are disclosed. The apparatus includes a heater and nozzle arrangement for directing a fluid, such as heated air, having a selected temperature, substantially different from ambient, into the open ends of the cell structure to cause a change in the temperature of the cell structure and radiance therefrom. A sensor is provided for sensing the temperature of the cell structure along the extent thereof or a detector may be provided for detecting the radiance along the cell structure. The temperature sensor or radiance detector generate electrical signals representative of either the temperature sensed or the radiance detected; these electrical signals are electronically converted to an image representative of either the temperatures sensed along the cell structure or the radiance detected from the cell structure to permit detection of any disbonded or plugged cells by differences between either the temperatures sensed or radiance detected along the cell structure. In another embodiment of the present invention, the output of the temperature sensor or radiance detector may be coupled to an alarm to provide a signal if the temperature or radiance varies outside of a predetermined range.
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Borneman Karl L.
Egan George P.
Jaeger Douglas A.
General Electric Company
Moore, Jr. Charles L.
Squillaro Jerome C.
Yasich Daniel M.
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