Abstract

We have used a resonant ultrasound spectroscopy technique to measure the five independent second-order elastic constants of a transversely isotropic SiC/Ti-6Al-4V composite from 10 to 300 K. The composite had 50 vol% SiC fibers imbedded in a Ti-6Al-4V matrix. Engineering moduli were deduced from measured elastic constants. We used the Varshni equation to fit the temperature dependence of the elastic constants and the engineering moduli. The measured data were used to deduce the engineering moduli for off-axis loading conditions at various temperatures.

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