RT Journal Article
T1 Multiscale characterization of nano-engineered fiber-reinforced composites: Effect of carbon nanotubes on the out-of-plane mechanical behavior
A1 Medina, Carlos
A1 Fernandez, Eduardo
A1 Salas, Alexis
A1 Naya Montans, Fernando
A1 Molina-Aldereguía, Jon
A1 Melendrez, Manuel F.
A1 Flores, Paulo
AB The mechanical properties of the matrix and the fiber/matrix interface have a relevant influence over the mechanical properties of a composite. In this work, a glass fiber-reinforced composite is manufactured using a carbon nanotubes (CNTs) doped epoxy matrix. The influence of the CNTs on the material mechanical behavior is evaluated on the resin, on the fiber/matrix interface, and on the composite. On resin, the incorporation of CNTs increased the hardness by 6% and decreased the fracture toughness by 17%. On the fiber/matrix interface, the interfacial shear strength (IFSS) increased by 22% for the nanoengineered composite (nFRC). The influence of the CNTs on the composite behavior was evaluated by through-thickness compression, short beam flexural, and intraply fracture tests. The compressive strength increased by 6% for the nFRC, attributed to the rise of the matrix hardness and the fiber/matrix IFSS. In contrast, the interlaminar shear strength (ILSS) obtained from the short beam tests was reduced by 8% for the nFRC; this is attributed to the detriment of the matrix fracture toughness. The intraply fracture test showed no significant influence of the CNTs on the fracture energy; however, the failure mode changed from brittle to ductile in the presence of the CNTs.
PB Hindawi
SN 1687-4110
YR 2017
FD 2017-04-30
LK https://hdl.handle.net/10016/34051
UL https://hdl.handle.net/10016/34051
LA eng
NO The financial support by Conicyt through the project Fondecyt de Iniciacion 11160285 led by Carlos Medina is gratefully acknowledged.
DS e-Archivo
RD 30 jun. 2024