Microwave Detection of Corrosion Under Paint

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N/A
Agency Tracking Number: 36017
Amount: $69,954.00
Phase: Phase I
Program: SBIR
Awards Year: 1997
Solitcitation Year: N/A
Solitcitation Topic Code: N/A
Solitcitation Number: N/A
Small Business Information
Texas Research Institute
9063 Bee Caves Road, Austin, TX, 78733
Duns: N/A
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Alan V. Bray
 (512) 263-2101
Business Contact
Phone: () -
Research Institution
N/A
Abstract
Corrosion under paint (CUP) is detectable by telltale electrochemical activity, but direct detection of CUP via nondestructive evaluation (NDE) methods is not commercially available. As corrosion forms, ferric oxides are created which have dielectric properties quite distinct from uncorroded areas. Microwave NDE methods sense these changes in dielectric properties to detect CUP. In a recent TRI/Austin - Colorado State University (CSU) initiative for CUP detection, microwaves were found to be extremely sensitive to corrosion, capable of mapping the corroded area, and able to determine the thickness of the remaining paint layer. This innovative approach to detecting CUP is ready for transition from the laboratory to a fielded NDE device. CSU's microwave NDE model will be used to develop optimal waveguide probe configurations for CUP detection. Using frequency and probe stand-off distance as parameters for optimizing CUP detection the design, development and test of a laboratory level microwave CUP system will be completed in Phase I. Data collected will be used in the notional design of a CUP NDE system for Naval ships. Microwave devices are small and easily operated by enlisted personnel, and offer an innovative means of assessing CUP in Navy and commercial applications.

* information listed above is at the time of submission.

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