The effect of nylon nanofibers on the dynamic behaviour and the delamination resistance of GFRP composites

Cristobal Garcia, Irina Trendafilova, Andrea Zucchelli, Justin Contreras

Research output: Contribution to journalConference Contribution

9 Citations (Scopus)
12 Downloads (Pure)

Abstract

Vibrations are responsible for a considerable number of accidents in aircrafts, bridges and other civil engineering structures. Therefore, there is a need to reduce the vibrations on structures made of composite materials. Delamination is a particularly dangerous failure mode for composite materials because delaminated composites can lose up to 60% of its strength and stiffness and still remain unchanged. One of the methods to suppress vibrations and preventing delamination is to incorporate nanofibers into the composite laminates. The aim of the present work is to investigate how nylon nanofibers affect the dynamic behaviour and delamination resistance of glass fiber reinforced polymer (GFRP) composites. Experiments and numerical simulations using finite element modelling (FEM) analysis are used to estimate the natural frequencies, the damping ratio and inter-laminar strength in GFRP composites with and without nylon nanofibers. It is found that the natural frequencies of the nylon nano-modified composites do not change significantly as compared to the traditional composites. However, nano-modified composites demonstrated a considerable increase in damping ratio and inter-laminar shear strength due to the incorporation of nylon nanofibers. This work contributes to the knowledge about the mechanical and dynamic properties of glass fibre reinforced polymer (GFRP) composites with nylon nanofibers.
Original languageEnglish
Article number14001
Number of pages6
JournalMATEC Web of Conferences
Volume148
DOIs
Publication statusPublished - 2 Feb 2018

Fingerprint

Nylons
Nanofibers
Delamination
Glass fibers
Polymers
Composite materials
Natural frequencies
Damping
fiberglass
Civil engineering
Shear strength
Failure modes
Laminates
Accidents
Aircraft
Stiffness

Keywords

  • vibrations
  • composite materials
  • delamination
  • nylon nanofibers
  • glass fibre reinforced polymer composties
  • GFRP

Cite this

Garcia, Cristobal ; Trendafilova, Irina ; Zucchelli, Andrea ; Contreras, Justin. / The effect of nylon nanofibers on the dynamic behaviour and the delamination resistance of GFRP composites. In: MATEC Web of Conferences. 2018 ; Vol. 148.
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The effect of nylon nanofibers on the dynamic behaviour and the delamination resistance of GFRP composites. / Garcia, Cristobal; Trendafilova, Irina; Zucchelli, Andrea; Contreras, Justin.

In: MATEC Web of Conferences, Vol. 148, 14001, 02.02.2018.

Research output: Contribution to journalConference Contribution

TY - JOUR

T1 - The effect of nylon nanofibers on the dynamic behaviour and the delamination resistance of GFRP composites

AU - Garcia, Cristobal

AU - Trendafilova, Irina

AU - Zucchelli, Andrea

AU - Contreras, Justin

PY - 2018/2/2

Y1 - 2018/2/2

N2 - Vibrations are responsible for a considerable number of accidents in aircrafts, bridges and other civil engineering structures. Therefore, there is a need to reduce the vibrations on structures made of composite materials. Delamination is a particularly dangerous failure mode for composite materials because delaminated composites can lose up to 60% of its strength and stiffness and still remain unchanged. One of the methods to suppress vibrations and preventing delamination is to incorporate nanofibers into the composite laminates. The aim of the present work is to investigate how nylon nanofibers affect the dynamic behaviour and delamination resistance of glass fiber reinforced polymer (GFRP) composites. Experiments and numerical simulations using finite element modelling (FEM) analysis are used to estimate the natural frequencies, the damping ratio and inter-laminar strength in GFRP composites with and without nylon nanofibers. It is found that the natural frequencies of the nylon nano-modified composites do not change significantly as compared to the traditional composites. However, nano-modified composites demonstrated a considerable increase in damping ratio and inter-laminar shear strength due to the incorporation of nylon nanofibers. This work contributes to the knowledge about the mechanical and dynamic properties of glass fibre reinforced polymer (GFRP) composites with nylon nanofibers.

AB - Vibrations are responsible for a considerable number of accidents in aircrafts, bridges and other civil engineering structures. Therefore, there is a need to reduce the vibrations on structures made of composite materials. Delamination is a particularly dangerous failure mode for composite materials because delaminated composites can lose up to 60% of its strength and stiffness and still remain unchanged. One of the methods to suppress vibrations and preventing delamination is to incorporate nanofibers into the composite laminates. The aim of the present work is to investigate how nylon nanofibers affect the dynamic behaviour and delamination resistance of glass fiber reinforced polymer (GFRP) composites. Experiments and numerical simulations using finite element modelling (FEM) analysis are used to estimate the natural frequencies, the damping ratio and inter-laminar strength in GFRP composites with and without nylon nanofibers. It is found that the natural frequencies of the nylon nano-modified composites do not change significantly as compared to the traditional composites. However, nano-modified composites demonstrated a considerable increase in damping ratio and inter-laminar shear strength due to the incorporation of nylon nanofibers. This work contributes to the knowledge about the mechanical and dynamic properties of glass fibre reinforced polymer (GFRP) composites with nylon nanofibers.

KW - vibrations

KW - composite materials

KW - delamination

KW - nylon nanofibers

KW - glass fibre reinforced polymer composties

KW - GFRP

U2 - 10.1051/matecconf/201814814001

DO - 10.1051/matecconf/201814814001

M3 - Conference Contribution

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JO - MATEC Web of Conferences

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