An investigation into mechanical properties of jute�polyester laminates for numerical prediction of strength and failure

Karthika, MR and Deb, A and Venkatesh, GS (2021) An investigation into mechanical properties of jute�polyester laminates for numerical prediction of strength and failure. In: Polymer Composites .

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Abstract

The study of natural fiber�based composites, which are being seen as a potential eco-friendly alternative to popular synthetic fiber�reinforced composites, has, of late, gained considerable momentum. Replacing the latter composites is, however, an uphill task especially for advanced mechanical and structural engineering applications, which often require assessment of behaviors of materials and components numerically till failure. An implied scenario, for example, would be to design automotive body components using natural fiber�reinforced composites of sufficient strength for meeting crashworthiness requirements. In the current study, bi-directionally woven jute fabric, due to its established supply base and consistent quality, has been chosen along with a general purpose polyester resin for fabrication of laminates of high fiber volume fraction obtained by combining the hand layup method with compression molding. A detailed and comprehensive mechanical characterization includes, for the first time, determination of tensile, compressive, shear, and flexural behaviors of jute�polyester laminates in a single unified study. The consistency of the generated mechanical properties, including deployment of secant moduli instead of conventional initial tangent moduli, in a finite element constitutive model is established by predicting the test-based stress�strain or load�displacement behaviors and failure modes using a commercially available explicit nonlinear dynamic analysis code viz. LS-DYNA. © 2021 Society of Plastics Engineers.

Item Type:	Journal Article
Publication:	Polymer Composites
Publisher:	John Wiley and Sons Inc
Additional Information:	The copyright for this article belongs to John Wiley and Sons Inc
Keywords:	Composite structures; Compression molding; Crashworthiness; Laminates; Natural fibers; Polyester resins; Polyesters; Reinforcement; Strain; Weaving, Consistent quality; Element constitutive model; Engineering applications; Fiber volume fractions; Mechanical characterizations; Numerical predictions; Polyester laminates; Reinforced composites, Failure (mechanical)
Department/Centre:	Division of Mechanical Sciences > Centre for Product Design & Manufacturing
Date Deposited:	03 Dec 2021 07:53
Last Modified:	03 Dec 2021 07:53
URI:	http://eprints.iisc.ac.in/id/eprint/70170

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