Multiscale modeling of composite materials: effect of textured fibers on interfacial properties
Date
2018
Journal Title
Journal ISSN
Volume Title
Publisher
University of Delaware
Abstract
The problem of optimizing composite effectiveness has been studied for as
long as these materials have existed. One way this effectiveness is characterized is by
the shear strength of the bond between fiber and resin, called interfacial shear strength
(IFSS). If the composite IFSS is weak, then little load is transferred from the
compliant resin to the stiff and strong fiber thereby reducing composite effectiveness.
Simulations were conducted to model this property of a composite material. Two
different models were used and combined, one at the microscale representing an
experiment and one at the nanoscale to represent interactions at the interface. The
models were calibrated and compared against experimental data for the single fiber
fragmentation test (SFFT) found in the literature. The microscale model showed good
agreement with experimental data while the nanoscale model indicated that texturing
of the fiber surface can have a large influence on composite IFSS.
Description
Keywords
Applied sciences, Cohesive zone modeling, Finite element analysis, Interfacial shear strength, Multiscale modeling, Single fiber fragmentation test