The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 25, 2006
Filed:
Oct. 04, 2004
Geoff E. Fair, Centerville, OH (US);
Triplicane A. Parthasarathy, Beavercreek, OH (US);
Ronald J. Kerans, Yellow Springs, OH (US);
Geoff E. Fair, Centerville, OH (US);
Triplicane A. Parthasarathy, Beavercreek, OH (US);
Ronald J. Kerans, Yellow Springs, OH (US);
The United States of America as represented by the Secretary of the Air Force, Washington, DC (US);
Abstract
An improved thermal history sensor having multiple polymeric substrates with unique compositions is disclosed. By positioning the sensor adjacent to an item subject to thermal stressors, each of the polymeric substrates react with a different rate of crystallization and thus yield a specific measure of infrared (IR) absorption spectra, for example. By comparing these measurements for each polymeric substrate, a thermal history fingerprint may be obtained. This thermal history fingerprint may then be compared to baseline data to yield information about the item, such as the expected remaining useful lifetime of the item.