A STUDY ON MECHANICAL PROPERTIES OF CONTINUOUS FIBER CERAMIC NANOCOMPOSITES

摘要

This paper reports two different areas of research in the field of nanocomposites. The first part reports on an analytical study for the prediction of mechanical properties of one of the constituents of nanocomposites; namely, nanotubes. The second part reports on the results of experiments on the influence of nano-fillers on the property enhancement of continuous fiber ceramic composites. In recent years, carbon nanotube reinforced composite materials have shown considerable developments and promises. In this study, we report constitutive models for the carbon nanotubes using asymptotic homogenization method. This method provides correct and mathematically justified results for the effective and local properties of composites with a periodic structure. In the experimental work, the effects of nanoparticles on mechanical performance of continuous fiber ceramic composites by preceramic polymer pyrolysis method have been investigated. Nanoparticle reinforced composite samples consistently showed marked improvements in flexural strength compared to their samples without nanoparticle reinforcement.