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Lookup NU author(s): Dr Guoyu Fu, Dr Dehong Huo, Dr Islam Shyha
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
© 2023 The Authors. A comprehensive experimental investigation on thermomechanical properties and micro-machinability of carbon nanofibre reinforced epoxy nanocomposites (EP/CNF) is presented in this study. The machinability indicators including cutting force and surface roughness have been investigated. Tensile properties, morphology of tensile fracture surfaces, glass transition temperature, machined chip morphology, and machined surface morphology were also characterised. To investigate the effect of both workpiece material properties and operating conditions on the machinability of EP/CNF, three controlled quantitative factors were selected at different levels, namely CNF loading, cutting speed and feed per tooth (FPT). Micromilling experiments were performed on an ultra-precision desktop micro-machine tool using titanium‑carbon-nitride (TiCN) coated micro-end mills. Among all compositions with CNF concentration ranging from 0.3 to 1 wt%, EP/1 wt% CNF exhibited the best machinability among other nanocomposites with its lowest cutting force of approximately 0.5 N and surface roughness of 0.18 μm. Size effect appeared at FPT below minimum uncut chip thickness (MUCT) indicated by the strong deterioration of surface quality owing to the dominant ploughing effect.
Author(s): Le B, Fu G, Khaliq J, Huo D, Shyha I
Publication type: Article
Publication status: Published
Journal: Journal of Manufacturing Processes
Year: 2023
Volume: 99
Pages: 781-793
Print publication date: 04/08/2023
Online publication date: 06/06/2023
Acceptance date: 23/05/2023
Date deposited: 13/06/2023
ISSN (print): 1526-6125
ISSN (electronic): 2212-4616
Publisher: Elsevier Ltd
URL: https://doi.org/10.1016/j.jmapro.2023.05.080
DOI: 10.1016/j.jmapro.2023.05.080
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