IMPROVED ULTRASONIC INSPECTION SYSTEM USING MULTIBIT DIGITAL SIGNAL CORRELATORS

Award Information
Agency:
Department of Defense
Amount:
$460,210.00
Program:
SBIR
Contract:
N/A
Solitcitation Year:
N/A
Solicitation Number:
N/A
Branch:
Army
Award Year:
1992
Phase:
Phase II
Agency Tracking Number:
9819
Solicitation Topic Code:
N/A
Small Business Information
Information Systems Technology
413 E 61st St, Clarendon Hills, IL, 60514
Hubzone Owned:
N
Woman Owned:
N
Socially and Economically Disadvantaged:
N
Duns:
N/A
Principal Investigator
 J Saniie/m Volk/m Bilguta
 (312) 325-8574
Business Contact
Phone: () -
Research Institution
N/A
Abstract
A MAJOR AND PRESSING PROBLEM IN NONDESTRUCTIVE EVALUATION (NDE) OF MATERIAL USING ULTRASOUND IS THE DETECTION OF MICROSTRUCTURAL ECHOES OF LOW SIGNAL-TO-NOISE RATIO (SNR). THE LOSS OF SIGNAL BY SCATTERING AND ABSORPTION IMPOSES A LIMIT ON THE DETECTION CAPABILITY OF ULTRASONIC SYSTEMS. THIS PROBLEM OFTEN ARISES IN EXAMINING COMPOSITES, CERAMICS, CAST COMPONENTS, WELDS OR ANY THICK SECTION OF MATERIALS. ONE METHOD OF OBTAINING HIGH SNR IS THE APPLICATION OF A CORRELATION RECEIVING SYSTEM. IN PHASE I OF THIS RESEARCH PROPOSAL, WE PROPOSE TO DEVELOP AND EVALUATE AN ULTRASONIC INSPECTION SYSTEM USING GOLAY CODES AND MULTIBIT SIGNAL CORRELATORS. THIS SYSTEM TRANSMITS LARGE TIME-WIDTH RADOM CODES AND ACHIEVES PULSE COMPRESSION THROUGH THE CORRELATOR WHICH RESULTS IN TREMENDOUS SNR. THE HARDWARE DESIGN WILL INCLUDE FEATURES TO EASE INTERFACING THE CORRELATOR SYSTEM WITH THE PC-BASED WORKSTATION FOR POST-PROCESSING THE ACQUIRED DATA. IT IS OUR OBJECTIVE TO EVALUATE THE ABILITY OF THE CORRELATOR TO CHARACTERIZE THE STRUCTURE OF COMPOSITES AND OTHER MATERIALS OF IMPORTANCE TO DOD.

* information listed above is at the time of submission.

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