TITLE:
Computational and Experimental Analyses of Detachment Force at the Interface between Carbon Fibers and Epoxy Resin
AUTHORS:
Kazuki Mori, Nobuhiko Matsumoto, Sukeharu Nomoto, Kenji Tsuruta
KEYWORDS:
Carbon Fiber–Reinforced Composite, Ab initio Method, Molecular Dynamics Simulation, Microdroplet Test
JOURNAL NAME:
Open Journal of Composite Materials,
Vol.7 No.4,
July
27,
2017
ABSTRACT: Herein,
we used theoretical and experimental methods to investigate the shear fracture
strengths of carbon fiber/epoxy resin interfaces. The shear strengths of carbon
fiber and epoxy resin were measured using the microdroplet test, whereas
interaction and binding energies were estimated usingAb initioand
molecular dynamics methods. However, binding energies did not impact the shear
strength volumes determined by microdroplet tests,i.e., bonds
between functional groups of the carbon filer and the epoxy resin were
difficult to break. On the other hand, the interaction energies calculated for
epoxy monomers were in good agreement with experimental data. Moreover, we
determined the relationship between the simulated interaction energy and the
shear fracture strength volume obtained using the microdroplet test.