Flexural behavior of commingled jute/polypropylene nonwoven fabric reinforced sandwich composites


Karaduman Y. , Onal L.

COMPOSITES PART B-ENGINEERING, vol.93, pp.12-25, 2016 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 93
  • Publication Date: 2016
  • Doi Number: 10.1016/j.compositesb.2016.02.055
  • Title of Journal : COMPOSITES PART B-ENGINEERING
  • Page Numbers: pp.12-25

Abstract

In this study, flexural behavior of nonwoven fabric reinforced sandwich composites from jute and polypropylene (PP) fibers was investigated. Jute/PP composite plates reinforced with jute/PP commingled nonwoven fabrics of different jute/PP fractions were used as facing materials in sandwich production. Balsa wood, polyester (PET) foam and PP honeycomb were used as core materials. Jute/PP nonwoven fabrics were treated with NaOH solution prior to sandwich production in an attempt to improve the fiber matrix adhesion and the quality of facing-core bonding. The flexural behavior of the sandwiches was investigated experimentally as well as using Euler-Bernoulli and Timoshenko beam theories. The flexural properties of the sandwiches improved as the jute fiber content increases. Euler-Bernoulli model yielded smaller deflection values when compared to experimental results whereas Timoshenko model provided a good estimation of sandwich flexural properties. The effectiveness of fiber/matrix adhesion and facing/core bonding was determined by conducting scanning electron microscopy (SEM) analysis. (C) 2016 Elsevier Ltd. All rights reserved.