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

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