Accession Number : AD1008224


Title :   Multiscale Modeling of Graphite/CNT/Epoxy Hybrid Composites


Descriptive Note : Technical Report,15 Jan 2013,14 Jan 2016


Corporate Author : Michigan Technological University Houghton United States


Personal Author(s) : Odegard,Gregory M


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=AD1008224


Report Date : 09 Mar 2016


Pagination or Media Count : 13


Abstract : Incorporation of carbon nanotubes (CNTs) into epoxy-based composites for aerospace structures has been limited because of the lack of reliable structure-property relationships. Because CNTs are expensive and difficult to fabricate and test, the development of CNT/epoxy composites needs to be facilitated with computational techniques. In this work, multiscale modeling techniques have been used to predict the influence ofatomic-level structure on bulk mechanical properties of CNT/epoxy composites. In particular, a reactive force field has been used within the MD framework to predict the mechanical response of CNT/epoxy composites with di-, tri-, and tetra-functional epoxies. The results of the research indicate that tri-functional epoxies provide the highest level of CNT/epoxy load transfer, resulting in bulk materials with higher moduli and strength characteristics.


Descriptors :   graphite , epoxy composites , composite materials , carbon nanotubes , molecular dynamics , micromechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE