Accession Number : AD0783645

Title :   The Effects of Thermal Cycling on the Strength of Aluminum-Graphite Composites.

Descriptive Note : Interim rept.,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Harrigan,William C. , Jr

Report Date : 31 JUL 1974

Pagination or Media Count : 21

Abstract : Room temperature tensile tests were conducted on specimens of 6061 aluminum-Thornel 50 graphite composite after thermal exposure for up to 3000 hours at 465C and thermal cycling between room temperature and 485C or 400C for up to 5000 cycles. These tests demonstrate that the ultimate strength of the composite is not affected by thermal exposure at 465C for 3000 hours or by thermal cycling between room temperature and 400C for 5000 cycles. The tensile modulus is also unaffected by exposure at 465C or cycling to 400C. Cycling between room temperature and 485C for 5000 cycles causes a 9% decrease in the strength with no decrease in modulus. (Author)

Descriptors :   *Fiber reinforced composites, *Aluminum alloys, *Carbon fibers, *Thermal cycling tests, Thermal fatigue, Tensile properties, High temperature

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE