A NEW NDE CAPABILITYFOR THIN-SHELLED STRUCTURES

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: N/A
Agency Tracking Number: 172
Amount: $495,000.00
Phase: Phase II
Program: SBIR
Awards Year: 1986
Solitcitation Year: N/A
Solitcitation Topic Code: N/A
Solitcitation Number: N/A
Small Business Information
Advanced Research &
1223 E. Arques Avenue, Sunnyvale, CA, 94086
Duns: N/A
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 () -
Business Contact
 Dr. James H. Stanley
Phone: (408) 733-7780
Research Institution
N/A
Abstract
A POWERFUL, NOW IMAGING MODALITY IDEALLY SUITED FOR THIN-SHELLED STRUCTURES BUT CONSIDERABLY MORE GENERAL IN NATURE IS PROPOSED. THE APPROACH IS BASED ON WELL- ESTABLISHED DIGITAL TOMOSYNTHESIS PRINCIPLES AND MODERN REAL-TIME DIGITAL RADIOGRAPHY TECHNIQUES. A SERIES OF COMPONENT RADIOGRAPHS OF A STRUCTURE TAKEN FROM DIFFERENCE ANGLES ARE MANIPULATED ACCORDING TO A RESTORATIVE ALGORITHM TO RECOVER A SET OF IMAGES OF PARALLEL SURFACE WITHIN THE OBJECT. THE METHOD IS COMPLEMENTARY TO COMPUTED TOMOGRAPHY (CT); BUT WHEREAS CT PRODUCES IMAGES OF PLANAR SURFACES SURFACES PARALLEL TO THE DIRECTION OF THE X-RAY FLUX, THE PROPOSED APPROACH PRODUCES IMAGES OF ARBITRARY CURVTILLINEAR SURFACES NORMAL TO THE X-RAY FLUX. CONSEQUENTLY, THE PROPOSED INSTRUCMENT, WHICH HAS BEEN DESIGNATED A DIGITAL TOMOGRAPH (DT), IS SUPERBLY TAILORED FOR NON-DESTRUCTIVELY EVALUATING STRUCTURES WHICH ARE FABRICATED IN A LAMINA OR MULTILAYE FASHION. THE ABILITY TO IMAGE TOMOGAPHIC SURFACES WITHIN AND CONCENTIC TO THE NATURAL SHAPE OF THE OBJECT PROVIDES A SUPERIOR INSPECTION CAPABILITY THAT CANNOT CURRENTLY BE MATCHED BY ANY OTHER NDE METHOD, INCLUDING CT.

* information listed above is at the time of submission.

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