Title:
INFRARED NDI DEVICE FOR SHALLOW DEFECT DETECTION
Document Type and Number:
WIPO Patent Application WO2008063313
Kind Code:
B1
Abstract:
First and second thermal sensors measure the respective temperatures of portions of a surface of a structure such as an aircraft component. An alert signal is emitted if the temperatures of the surface portions are substantially different. An energy source causes heat flow within the structure. Subsurface flaws such as disbonded areas between composite layers and foreign materials obstruct heat flow within the structure and cause proximate surface portions to exhibit different temperatures. A non-alert signal may be emitted if the temperatures of proximate surface portions are essentially the same.
Inventors:
THOMPSON JEFFREY G (US)
KOLLGAARD JEFFREY R (US)
UYEHARA CLYDE T (US)
KOLLGAARD JEFFREY R (US)
UYEHARA CLYDE T (US)
Application Number:
PCT/US2007/021753
Publication Date:
September 18, 2008
Filing Date:
October 10, 2007
Export Citation:
Assignee:
BOEING CO (US)
THOMPSON JEFFREY G (US)
KOLLGAARD JEFFREY R (US)
UYEHARA CLYDE T (US)
THOMPSON JEFFREY G (US)
KOLLGAARD JEFFREY R (US)
UYEHARA CLYDE T (US)
International Classes:
G01N25/72; B64F5/00; G01N21/88
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