Accession Number : AD0753874


Title :   Investigation of the Properties of Carbon-Carbon Composites and Their Relationship to Nondestructive Test Measurements


Descriptive Note : Final rept. Jun 1969-Jun 1971


Corporate Author : MDDONNELL DOUGLAS ASTRONAUTICS CO-WEST SANTA MONICA CA


Personal Author(s) : Evangelides, John S ; Meyer, Robert A ; Zimmer, James E


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD= AD0753874


Report Date : Aug 1971


Pagination or Media Count : 258


Abstract : Factors affecting the quality and performances of carbon-carbon composites are identified and evaluated by nondestructive and destructive methods. Correlations existed between the nondestructive test response data and the physical and mechanical property measurements are determined. A number of different types of defects were intentionally introduced during the processing steps to aid in this evaluation. The characterization of the VYB 70 1/2 yarn has indicated that considerable weight losses and shrinkages occur upon heating. The Thornel 50 and Modmor II graphite fibers did not mdergo any significant weight loss under similar conditions.


Descriptors :   *COMPOSITE MATERIALS , *GRAPHITE , ANOMALIES , CARBON FIBERS , COAL TAR , DEFECTS(MATERIALS) , NONDESTRUCTIVE TESTING , PYROLYSIS , RADIOGRAPHY , ULTRASONIC PROPERTIES


Subject Categories : Laminates and Composite Materials
      Test Facilities, Equipment and Methods


Distribution Statement : APPROVED FOR PUBLIC RELEASE