Nano-silica inclusion effects on mechanical and dynamic behavior of fiber reinforced carbon/Kevlar with epoxy resin hybrid composites


Alsaadi M., BULUT M., Erkliğ A., Jabbar A.

Composites Part B: Engineering, vol.152, pp.169-179, 2018 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 152
  • Publication Date: 2018
  • Doi Number: 10.1016/j.compositesb.2018.07.015
  • Journal Name: Composites Part B: Engineering
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.169-179
  • Keywords: Carbon/Kevlar fiber, Damping, Epoxy, Flexural, Nano-silica, Tensile, Vibration
  • Hakkari University Affiliated: Yes

Abstract

The effects of nano-silica (NS) particles inclusion on the tensile, flexural, vibration and damping characteristics of intraply and woven fiber reinforced carbon/Kevlar/epoxy (CKFRE) hybrid composites were experimentally investigated. Test samples were prepared according to ASTM standards for five different weight contents of NS particles (0.5, 1, 1.5, 2.5 and 3 wt%). Experimental modal analysis was performed only for fundamental frequency to measure damping and natural frequency for characterization of vibration properties. Results showed that 20% improvement in tensile strength was seen at NS content of 3 wt%, while flexural strength was increased by 35.7% according to unmodified CKFRE samples. It was concluded that interaction of NS particles with epoxy and fiber leading to improve interfacial stress resulted in a significant effect on dynamic properties in terms of natural frequency and damping ratio.