REAL TIME IN-SITU DIELECTRIC MONITORING OF ADVANCED COMPOSITE CURING PROCESSES

Award Information
Agency:
Department of Defense
Branch:
Defense Advanced Research Projects Agency
Amount:
$429,000.00
Award Year:
1988
Program:
SBIR
Phase:
Phase II
Contract:
N/A
Agency Tracking Number:
6294
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Programmed Composites Inc.
380 Cliffwood Pk, Brea, CA, 92621
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
N/A
Principal Investigator
 L Brian Keller
 (714) 671-3890
Business Contact
Phone: () -
Research Institution
N/A
Abstract
A NOVEL TECHNIQUE FOR MONITORING PHYSICAL AND CHEMICAL CHANGES OCCURRING DURING THE CURE PROCESS IN ADVANCED COMPOSITE, ORGANIC MATRIX, LAY-UPS IS UNDER DEVELOPMENT AT PCI. CHANGES IN DIELECTRIC PROPERTIES THROUGH THE THICKNESS OF THE LAMINATE ARE DIRECTLY MEASURED, DISPLAYED, AND RECORDED IN REAL TIME. THESE CHANGES ARE CORRELATED WITH CRITICAL STEPS IN THE PROCESS WHICH MUST BE PROPERLY CONTROLLED TO PRODUCE CONSISTENT, HIGH QUALITY COMPOSITES. THIS DIELECTRIC MONITORING TECHNIQUE, CALLED RES-CAP (TM), HAS PROVED PARTICULARLY PRACTICAL AND USEFUL IN PROCESS CONTROL FOR POLYIMIDE COMPOSITES AND WORKS WITH ALL TYPES OF REINFORCEMENTS. IN THIS PROGRAM, RES-CAP TECHNIQUE WILL BE EXTENDED TO DETECTING CRITICAL EVENTS IN PROCESSING (1) CARBON-CARBON PRECURSOR STRUCTURES, AND (2) HIGH TEMPERATURE RESISTANT THERMOPLASTIC AND THERMOSETTING COMPOSITES. IMPROVEMENTS IN DETECTOR SENSITIVITY, OPERATION AT HIGHER FREQUENCIES AND MODIFICATIONS OF ELECTRODES TO WITHSTAND TEMPERATURES OF 800 DEG F MAY BE REQUIRED. DIELECTRIC RESPONSE VS TIME WILL BE CORRELATED WITH THE EVOLUTION OF INTRINSIC FEATURES RELATED TO QUALITY, UNIFORMITY AND REPRODUCIBILITY.

* information listed above is at the time of submission.

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