Material removal of glass by magnetorheological fluid jet

Wook Bae Kim, Eunseok Nam, Byung-Kwon Min, Doo Sun Choi, Tae Jin Je, Eun Chae Jeon

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Magnetorheological (MR) fluid jet polishing is a material removal process for precision products such as optical elements. It is characterized by a jet flow that is stabilized by a magnetic field, and a highly predictable machining spot. The behavior of the particles in an MR fluid slurry near a target wall surface is conceptually described. In experiments with a BK7 glass specimen, various removal spots are created by impingement of MR fluid jets at velocities of 10~30 m/s, using MR fluids of different compositions, and different processing durations. The tangential MR fluid flow along the part surface is assumed to be responsible for material removal, and theoretical models for the prediction of material removal are developed, using the conventional wear model and granular flow theory. The constitutive relation between the shear stress and the shear rate changes as the jet velocity increases, which has a critical effect on the behavior of material removal. CFD analysis is performed to calculate the wall shear rate. The proposed models agree with the experimental results with respect to the distribution of the material removal rate. Additionally, the surface topographies of polished parts are discussed, with regards to the particle behavior.

Original languageEnglish
Pages (from-to)629-637
Number of pages9
JournalInternational Journal of Precision Engineering and Manufacturing
Volume16
Issue number4
DOIs
Publication statusPublished - 2015 Apr 1

Fingerprint

Magnetorheological fluids
Glass
Shear deformation
Surface topography
Optical devices
Polishing
Shear stress
Flow of fluids
Machining
Computational fluid dynamics
Wear of materials
Magnetic fields
Processing
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

Cite this

Kim, Wook Bae ; Nam, Eunseok ; Min, Byung-Kwon ; Choi, Doo Sun ; Je, Tae Jin ; Jeon, Eun Chae. / Material removal of glass by magnetorheological fluid jet. In: International Journal of Precision Engineering and Manufacturing. 2015 ; Vol. 16, No. 4. pp. 629-637.
@article{604826c6d441414e918603d26814ded7,
title = "Material removal of glass by magnetorheological fluid jet",
abstract = "Magnetorheological (MR) fluid jet polishing is a material removal process for precision products such as optical elements. It is characterized by a jet flow that is stabilized by a magnetic field, and a highly predictable machining spot. The behavior of the particles in an MR fluid slurry near a target wall surface is conceptually described. In experiments with a BK7 glass specimen, various removal spots are created by impingement of MR fluid jets at velocities of 10~30 m/s, using MR fluids of different compositions, and different processing durations. The tangential MR fluid flow along the part surface is assumed to be responsible for material removal, and theoretical models for the prediction of material removal are developed, using the conventional wear model and granular flow theory. The constitutive relation between the shear stress and the shear rate changes as the jet velocity increases, which has a critical effect on the behavior of material removal. CFD analysis is performed to calculate the wall shear rate. The proposed models agree with the experimental results with respect to the distribution of the material removal rate. Additionally, the surface topographies of polished parts are discussed, with regards to the particle behavior.",
author = "Kim, {Wook Bae} and Eunseok Nam and Byung-Kwon Min and Choi, {Doo Sun} and Je, {Tae Jin} and Jeon, {Eun Chae}",
year = "2015",
month = "4",
day = "1",
doi = "10.1007/s12541-015-0084-3",
language = "English",
volume = "16",
pages = "629--637",
journal = "International Journal of Precision Engineering and Manufacturing",
issn = "1229-8557",
publisher = "Korean Society of Precision Engineering",
number = "4",

}

Material removal of glass by magnetorheological fluid jet. / Kim, Wook Bae; Nam, Eunseok; Min, Byung-Kwon; Choi, Doo Sun; Je, Tae Jin; Jeon, Eun Chae.

In: International Journal of Precision Engineering and Manufacturing, Vol. 16, No. 4, 01.04.2015, p. 629-637.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Material removal of glass by magnetorheological fluid jet

AU - Kim, Wook Bae

AU - Nam, Eunseok

AU - Min, Byung-Kwon

AU - Choi, Doo Sun

AU - Je, Tae Jin

AU - Jeon, Eun Chae

PY - 2015/4/1

Y1 - 2015/4/1

N2 - Magnetorheological (MR) fluid jet polishing is a material removal process for precision products such as optical elements. It is characterized by a jet flow that is stabilized by a magnetic field, and a highly predictable machining spot. The behavior of the particles in an MR fluid slurry near a target wall surface is conceptually described. In experiments with a BK7 glass specimen, various removal spots are created by impingement of MR fluid jets at velocities of 10~30 m/s, using MR fluids of different compositions, and different processing durations. The tangential MR fluid flow along the part surface is assumed to be responsible for material removal, and theoretical models for the prediction of material removal are developed, using the conventional wear model and granular flow theory. The constitutive relation between the shear stress and the shear rate changes as the jet velocity increases, which has a critical effect on the behavior of material removal. CFD analysis is performed to calculate the wall shear rate. The proposed models agree with the experimental results with respect to the distribution of the material removal rate. Additionally, the surface topographies of polished parts are discussed, with regards to the particle behavior.

AB - Magnetorheological (MR) fluid jet polishing is a material removal process for precision products such as optical elements. It is characterized by a jet flow that is stabilized by a magnetic field, and a highly predictable machining spot. The behavior of the particles in an MR fluid slurry near a target wall surface is conceptually described. In experiments with a BK7 glass specimen, various removal spots are created by impingement of MR fluid jets at velocities of 10~30 m/s, using MR fluids of different compositions, and different processing durations. The tangential MR fluid flow along the part surface is assumed to be responsible for material removal, and theoretical models for the prediction of material removal are developed, using the conventional wear model and granular flow theory. The constitutive relation between the shear stress and the shear rate changes as the jet velocity increases, which has a critical effect on the behavior of material removal. CFD analysis is performed to calculate the wall shear rate. The proposed models agree with the experimental results with respect to the distribution of the material removal rate. Additionally, the surface topographies of polished parts are discussed, with regards to the particle behavior.

UR - http://www.scopus.com/inward/record.url?scp=84928103633&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84928103633&partnerID=8YFLogxK

U2 - 10.1007/s12541-015-0084-3

DO - 10.1007/s12541-015-0084-3

M3 - Article

VL - 16

SP - 629

EP - 637

JO - International Journal of Precision Engineering and Manufacturing

JF - International Journal of Precision Engineering and Manufacturing

SN - 1229-8557

IS - 4

ER -