Mechanical and Fracture Characterization of Epoxy/PLA/Graphene/SiO2 Composites

K. Dileep; A. Srinath; N.R. Banapurmath; M.A. Umarfarooq; A.M. Sajjan

doi:10.3221/IGF-ESIS.64.15

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Published Mar 21, 2023

DOI https://doi.org/10.3221/IGF-ESIS.64.15

K. Dileep

Department of Mechanical Engineering, Koneru Lakshmaiah Education Foundation, KL Deemed to be University, Green Fields, Vaddeswaram, Guntur-522 502, India.

A. Srinath

Department of Mechanical Engineering, Koneru Lakshmaiah Education Foundation, KL Deemed to be University, Green Fields, Vaddeswaram, Guntur-522 502, India.

N.R. Banapurmath

Centre of Excellence in Material Science, School of Mechanical Engineering, K.L.E. Technological University, BVB campus, Hubballi-580031, India

M.A. Umarfarooq

Centre of Excellence in Material Science, School of Mechanical Engineering, K.L.E. Technological University, BVB campus, Hubballi-580031, India

https://orcid.org/0000-0002-9369-7913 A.M. Sajjan

Centre of Excellence in Material Science, School of Mechanical Engineering, K.L.E. Technological University, BVB campus, Hubballi-580031, India

Abstract

This work investigated the effects of graphene and SiO₂ addition on the mechanical and fracture properties of epoxy (80%) - Polylactic acid (PLA) (20 %) composites. Epoxy-PLA composites were loaded with graphene and SiO₂ (0.1-0.5 wt. % with equal weightage of each filler), and were manufactured by bath sonication followed by manual casting. The tensile, flexural strength and fracture toughness of nanocomposites increased with an increase in filler concentration till it reached 0.3 wt. %. The addition of filler content higher than 0.3 wt. % drastically reduced the mechanical and fracture properties. The fractured surfaces from the tensile tests were examined using Scanning electron microscopy imaging to understand the effects of filler addition. The numerical analysis was also performed to simulate the impact of filler concentration on the tensile strength of nanocomposites using representative volume element (RVE) in ANSYS workbench.

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Issue

Vol. 17 No. 64 (2023): April 2023

Section

Advanced Manufacturing and Processing

How to Cite

Dileep, K., Srinath, A., Banapurmath, N., Umarfarooq, M. and Sajjan, A. (2023) “Mechanical and Fracture Characterization of Epoxy/PLA/Graphene/SiO2 Composites ”, Frattura ed Integrità Strutturale, 17(64), pp. 229–239. doi: 10.3221/IGF-ESIS.64.15.

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