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:
Dec. 27, 2005
Filed:
Apr. 16, 2003
Applicants:
Steven M. Burns, West Hartford, CT (US);
Sudhangshu Bose, Manchester, CT (US);
Inventors:
Steven M. Burns, West Hartford, CT (US);
Sudhangshu Bose, Manchester, CT (US);
Assignee:
United Technologies, Corporation, Hartford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N027/00 ;
U.S. Cl.
CPC ...
Abstract
A method and apparatus are provided for inspecting a coated substrate such as a multi-layer coating on a substrate of a turbine airfoil. At each of a number of locations along the airfoil a number of frequencies of alternating current are passed through the airfoil. At least one impedance parameter is measured. The measured impedance parameters are utilized to determine a condition of the coating.