TY - JOUR
T1 - Localized magnetic fluid finishing of freeform surfaces using electropermanent magnets and magnetic concentration
AU - El-Amri, Iskander
AU - Iquebal, Ashif Sikandar
AU - Srinivasa, Arun
AU - Bukkapatnam, Satish
N1 - Funding Information:
The authors are indebted to National Science Foundation for the kind support through grant CMMI- 1538501.
Funding Information:
The authors are indebted to National Science Foundation for the kind support through grant CMMI- 1538501 .
Publisher Copyright:
© 2018 The Society of Manufacturing Engineers
PY - 2018/8
Y1 - 2018/8
N2 - We report a novel magnetic concentration setup for localized finishing of freeform surfaces based on employing electropermanent magnet arrays configured using a recently developed magnetic concentration principle. The setup, without the use of any rotating or moving component, is capable of creating a localized spatiotemporal magnetic field variation a specialized magnetic fluid to polish a target 1.5 cm2 area on the workpiece surface. Using a computational mechanistic model as well as experimental studies, we show that the current configuration of electropermanent magnets is capable of amplifying the magnetic strength by almost 3 times near the workpiece surface in comparison to no magnetic concentration. We also show that by modulating the strength, including toggling the polarity of electropermanent magnets, we demonstrate the sloshing motion of the fluid at a targeted region without requiring any rotating part. Experimental investigations on the localized removal of acrylic paint from a cylindrical workpiece surface suggest that the method can be used to polish localized, hard-to-access freeform geometries.
AB - We report a novel magnetic concentration setup for localized finishing of freeform surfaces based on employing electropermanent magnet arrays configured using a recently developed magnetic concentration principle. The setup, without the use of any rotating or moving component, is capable of creating a localized spatiotemporal magnetic field variation a specialized magnetic fluid to polish a target 1.5 cm2 area on the workpiece surface. Using a computational mechanistic model as well as experimental studies, we show that the current configuration of electropermanent magnets is capable of amplifying the magnetic strength by almost 3 times near the workpiece surface in comparison to no magnetic concentration. We also show that by modulating the strength, including toggling the polarity of electropermanent magnets, we demonstrate the sloshing motion of the fluid at a targeted region without requiring any rotating part. Experimental investigations on the localized removal of acrylic paint from a cylindrical workpiece surface suggest that the method can be used to polish localized, hard-to-access freeform geometries.
KW - Electropermanent magnet
KW - Localized polishing
KW - Magnetic concentration
KW - Magnetic fluids
UR - http://www.scopus.com/inward/record.url?scp=85048796561&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85048796561&partnerID=8YFLogxK
U2 - 10.1016/j.jmapro.2018.05.026
DO - 10.1016/j.jmapro.2018.05.026
M3 - Article
AN - SCOPUS:85048796561
SN - 1526-6125
VL - 34
SP - 802
EP - 808
JO - Journal of Manufacturing Processes
JF - Journal of Manufacturing Processes
ER -