Investigating mechanical behaviors of nanoparticle reinforced composites

Jia-Lin Tsai*, H. Hsiao, Y. L. Cheng

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

The research is aimed to investigate the mechanical behaviors of epoxy based nanocomposites reinforced with spherical nanoparticles. Five different contents of silica nanoparticles, 5 10 15 20 and 40 wt %, were introduced in the samples. Through a sol-gel technique, the silica particles with diameter of 25 nm were dispersed uniformly into the epoxy matrix. Two different epoxy matrix systems, one is ductile and the other is brittle, were considered to form the nanocomposites and the effect of nanoparticles on the tensile, flexural and fracture behaviors of the two nanocomposite systems were investigated. The experimental results obtained from tensile tests indicate that, in both matrix systems, the modulus of nanocomposites increases with the increment of particulate inclusions and the enhancing behavior is coincided with the model predictions obtained from the Mori-Tanaka micromechanical model. In addition, the fracture tests conducted on single-edge-notch bending specimens reveal that the inclusion of nanoparticles can effectively increase the fracture toughness of the nanocomposites. Furthermore, the extent of the enhancement is more appreciable in the brittle matrix system rather than in the ductile matrix system. The enhancement is attributed to the formation of plastic deformation together with the nanoparticle debonding which dissipate more fracture energy.

Original languageEnglish
Title of host publicationAmerican Society for Composites - 22nd Technical Conference of the American Society for Composites 2007 - Composites
Subtitle of host publicationEnabling a New Era in Civil Aviation
Pages1586-1600
Number of pages15
StatePublished - 1 Dec 2007
Event22nd Technical Conference of the American Society for Composites 2007 - Composites: Enabling a New Era in Civil Aviation - Seattle, WA, United States
Duration: 17 Sep 200719 Sep 2007

Publication series

NameAmerican Society for Composites - 22nd Technical Conference of the American Society for Composites 2007 - Composites: Enabling a New Era in Civil Aviation
Volume3

Conference

Conference22nd Technical Conference of the American Society for Composites 2007 - Composites: Enabling a New Era in Civil Aviation
CountryUnited States
CitySeattle, WA
Period17/09/0719/09/07

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