Magnetic Imaging And Current Mapping For NDE Of Aluminum Components On Ships

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$70,000.00
Award Year:
2006
Program:
SBIR
Phase:
Phase I
Contract:
N65538-07-M-0028
Award Id:
79234
Agency Tracking Number:
N062-132-0174
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
44 Hunt Street, Watertown, MA, 02472
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
073804411
Principal Investigator:
Timothy Tiernan
Group Leader
(617) 668-6801
ttiernan@rmdinc.com
Business Contact:
Gerald Entine
President
(617) 668-6801
gentine@rmdinc.com
Research Institution:
n/a
Abstract
New technology is needed for nondestructive evaluation (NDE) of defects in aluminum structures on ships. Fatigue cracks at weldments where defects may be hidden under paints, rough surfaces and other materials are especially problematic. An NDE technology capable of imaging defects in welds under a variety of surface conditions would be ideal. Existing NDE technologies such as visible imaging, x-radiography and acoustic emission cannot provide the portability, rapid imaging, moderate equipment cost, and simple operating protocols needed. Eddy current testing (ECT) is highly sensitive to cracks in aluminum, but it is sensitive to lift-off at rough surfaces and does not image defects. RMD proposes a revolutionary new eddy current imaging technology based on magnetic imaging and current mapping to automatically detect and characterize cracks, corrosion and other defects in rough metallic components. A 2-D sensor array will generate magnetic images of eddy currents. Current mapping will allow the system to be used with rough surfaces without susceptibility to lift-off. The NDE system will be portable, versatile and simple to operate and interpret. The proposed NDE technology will improve ship integrity and safety, and reduce the cost and complexity of inspections. It will also characterize incipient defects and defect propagation.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government