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

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

Authors

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

DOI:

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

Keywords:

SEM, Mechanical Properties, Polymer composites, Fracture

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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Published

21-03-2023

Issue

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

Section

Advanced Manufacturing and Processing

License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Copyright
Authors are allowed to retain both the copyright and the publishing rights of their articles without restrictions.

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Frattura ed Integrità Strutturale (Fracture and Structural Integrity, F&SI) is an open-access journal which means that all content is freely available without charge to the user or his/her institution. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles in this journal without asking prior permission from the publisher or the author. This is in accordance with the DOAI definition of open access.

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How to Cite

Mechanical and Fracture Characterization of Epoxy/PLA/Graphene/SiO2 Composites . (2023). Frattura Ed Integrità Strutturale, 17(64), 229-239. https://doi.org/10.3221/IGF-ESIS.64.15