Experimental and modeling investigation on machined surfaces of HDPE-MWCNT polymer nanocomposite

Gong, Yao; Baik, Young-Jin; Li, Chang Ping; Byon, Chan; Park, Jang Min; Ko, Tae Jo

doi:10.1007/s00170-016-8840-9

Cited by 11 publications

(2 citation statements)

References 19 publications

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“…The average spacing between adjacent features exhibited a linear dependence on the cutting thickness [7]. The features were similar to these in metals and polymer composites [10,11], which were explained by adiabatic shearing on the shear plane.…”

Section: Chip and Surface Morphologiessupporting

confidence: 54%

Homogeneous and Localized Deformation in Poly(Methyl Methacrylate) Nanocutting

Sun

Gamstedt

2019

Nanomanuf Metrol

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Nanoscale manufacturing imposes demands on prediction of cutting processes on small scales. Predictive modeling schemes based on the underlying physical mechanisms could potentially be more generally applicable in manufacturing. In this work, the experimental and numerical studies on polymethyl methacrylate (PMMA) nanocutting are reported. The cutting experiments were performed on an ultramicrotome instrumented with piezoelectric transducers to measure the cutting forces on cutting down to about 60 nm thickness. Using atomic force microscopy, the surface damage was identified as shear yield bands triggered by adiabatic heating. A suitable physical model including these observed phenomena made it possible to link the processing conditions with the onset of damage, i.e., the transition between a high-quality transparent surface and a damaged uneven surface. Finite element analysis was carried out to investigate the deformation modes of PMMA under different cutting conditions and to predict the formation of the undesired shear bands. From an engineering perspective, such an approach could be potentially useful in improving manufacturing control.

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Section: Chip and Surface Morphologiessupporting

confidence: 54%

Homogeneous and Localized Deformation in Poly(Methyl Methacrylate) Nanocutting

Sun

Gamstedt

2019

Nanomanuf Metrol

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“…The study has neglected the effects of filler content, cutting speed on the machinability when micromachining of nanocomposites as well as the investigation of chip formation that is necessary to support for the discussion. The influences of cutting speed on surface roughness when micromachining HDPE/MWCNT nanocomposites have been experimentally claimed less significant than feed rate [52] due to the obvious feed marks on the specimen surfaces but no detailed discussion was expressed. This has been reconfirmed by Zinati and Razfar [53] in an investigation on surface roughness with variations of cutting speed, feed rate and MWCNT content.…”

Section: Micro-milling Of Cnt-based Nanocompositesmentioning

confidence: 99%

A Review on Nanocomposites. Part 2: Micromachining

Liu

Khaliq

Huo

et al. 2020

Journal of Manufacturing Science and Engineering

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Micromachining of nanocomposites is deemed to be a complicated process due to the anisotropic, heterogeneous structure and advanced mechanical properties of these materials associated with the size effects in micromachining. It leads to poorer machinability in terms of high cutting force, low surface quality, and high rate of tool wear. A comprehensive review on mechanical properties of nanocomposites aiming to pointout their effects on micro-machinability has been addressed in part 1. In part 2, the subsequent micro-machining processes are critically discussed based on relevant studies from both experimental and modeling approaches. The main findings and limitations of these micro-machining methods in processing nanocomposites have been highlighted together with future prospects.

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