Elastic constants of tapered laminated woven jute/epoxy and woven aloe/epoxy composites under the influence of porosity

Abstract

Anisotropic nature of plant fiber and various plant fiber-correlated porosities are the major setbacks in evaluating the elastic constants of plant fiber-reinforced polymer composites theoretically. An attempt is made here to get rid of those setbacks and focuses toward the evaluation of accurate elastic constants of composites. In this work, mechanical characteristics such as tensile, flexure, and shear characteristics of woven jute/epoxy and woven aloe/epoxy composites are determined. The experimentally measured elastic constants of composites are further used to find the elastic anisotropy of the jute and aloe fibers using the proposed model which is a combined model of Halpin-Tsai equations and laminate analogy approach with the inclusion of porosity correction factor. Using the theoretically predicted elastic properties of fiber, the elastic constants of the tapered laminated woven jute/epoxy and woven aloe/epoxy composites are evaluated using the proposed model.

Dynamic Characteristics of Woven Flax/Epoxy Laminated Composite Plate

“…Most importantly, they observed that the variability of lengthy natural fibre composites was considerably lower to that of one observed in previous investigations of single natural fibres. Suthenthiraveerappa and Gopalan [ 16 ] developed a combined model of laminate analogy and the Halphin–Tsai approach to evaluate the elastic constants of plant fibre fortified polymer composite (PFRP) in which the porosities concorded with plant fibre-fortified composites and the transversely isotropic material behaviour of plant fibre was considered. Kureemun et al [ 17 ] explored the performance enhancement of natural fibre-reinforced composites through the hybridization of carbon and flax fibres.…”

Experimental and Numerical Analyses on the Buckling Characteristics of Woven Flax/Epoxy Laminated Composite Plate under Axial Compression

“…It was found that the buckling strength of the composite laminate was enhanced with the number of layers and it was also observed that the weaving style of a woven fabric affected the critical buckling load in which the basket type weaving model gave a better buckling strength. Suthenthiraveerappa and Gopalan [ 15 ] investigated the effect of porosity associated with natural, i.e., plant fiber, composites along with the transversely isotropic characteristics of plant fibers on the elastic constants of both jute and aloe fiber composites. A new methodology was also developed to estimate the elastic constants of uniform and taper polymer laminated composites reinforced with natural fiber.…”

Desenvolvimento E Caracterização De Compósitos Verdes Para Habitações Sociais

“…Karpiesiuk [126] em sua pesquisa sobre as propriedades do poliuretano para aplicação em pisos de alumínio obteve como resultado de ensaios de tração em adesivos de poliuretano o valor de 0,41. Já o coeficiente de Poisson da fibra de juta, com base nos trabalhos de Suthenthiraveerappa e Gopalan [127], foi estipulado um valor de 0,374. Dessa forma, é possivel obter um coeficiente de Poisson do compósito pela Regra das Misturas:…”