Underwater NDE/NDT System for Ship Aluminum Hulls Below the Waterline

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00167-11-P-0434
Agency Tracking Number: N111-057-0100
Amount: $79,993.00
Phase: Phase I
Program: SBIR
Awards Year: 2011
Solitcitation Year: 2011
Solitcitation Topic Code: N111-057
Solitcitation Number: 2011.1
Small Business Information
Physical Optics Corporation
Photonic Systems Division, 20600 Gramercy Place, Bldg. 100, Torrance, CA, -
Duns: 153865951
Hubzone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 Volodymyr Romanov
 Team Leader
 (310) 320-3088
 psproposals@poc.com
Business Contact
 Gordon Drew
Title: Chief Financial Officer
Phone: (310) 320-3088
Email: gedrew@poc.com
Research Institution
N/A
Abstract
To address the Navy"s need for innovative and alternative approaches for nondestructive evaluation and testing (NDE/NDT) for crack detection and hull thickness measurement below the waterline for aluminum ships, Physical Optics Corporation (POC) proposes to develop a new fully functional mobile Underwater NDE/NDT (UNWET) system for large-area non-uniform multilayered thick aluminum/aluminum alloy structures with complex geometry, accurately identifying flaws and defects (corrosion, fatigue degradation, voids) and their precise locations and measurements. UNWET is based on registration of Compton scattered X-ray images of an object, and the reconstruction of its three-dimensional structure using a unique POC-developed Compton imaging tomography technique. UNWET will provide a full exposure time of ~1 min per sq. ft., spatial resolution of ~500 micron, and sensitivity of ~1.0% in density difference. UNWET can define sizes and positions of detected defects with accuracy of 500 micron inside 1- to 3-in.-thick (or even more for high X-ray energies) aluminum hull structures. UNWET can be operated by a diver or mounted on a remotely operated underwater vehicle. In Phase I, POC will demonstrate the feasibility of UNWET using a TRL-4 Phase I benchtop prototype. In Phase II, POC plans to develop and demonstrate a fully functional TRL-6 prototype.

* information listed above is at the time of submission.

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