Effect of Temperature and Strain Rate on the Tensile Properties of Aluminum-Boron, Epoxy-Boron, and Epoxy-Graphite Composites

摘要

The effects of strain rates from 0.00008 to 0.4/sec on tensile strengths and moduli of 6061 aluminum-46.5 v/o boron at temperatures up to 1000F, of unidirectional and cross-ply epoxy-50 v/o boron composites at temperatures up to 500F and of cross-ply epoxy-60 v/o graphite composites at temperatures up to 250F have been measured. Longitudinal properties were reduced moderately at high temperatures, and were only slightly higher at high strain rates than at low strain rates. Transverse properties decreased rapidly with temperature, and were either unaffected by high strain rates, particularly at low temperatures, or were substantially increased, especially at high temperatures, in both aluminum-and epoxy-based systems. (Author)