Thermal measuring and testing – Leak or flaw detection – With heating or cooling of specimen for test
Patent
1992-01-23
1994-09-06
Cuchlinski, Jr., William A.
Thermal measuring and testing
Leak or flaw detection
With heating or cooling of specimen for test
374 7, 374 4, 356237, 356432, G01N 2520, G01N 2572
Patent
active
053442369
ABSTRACT:
A method for the quantitative and qualitative evaluation of a nonuniform interface between a layer and a substrate is disclosed wherein thermal excitation is provided by irradiating the layer and thermal relaxation responsive to this thermal excitation is measured. The measured thermal relaxation is compared to the expected values, obtained from a model derived for the quantitative description of the process of thermal relaxation. The fraction of the deteriorated area of the interface is obtained from the portion of the thermal relaxation which diverges from the expected values.
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Cuchlinski Jr. William A.
Gutierrez Diego F. F.
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