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Malm, C. (2018) Measurement and Validation for Electron Beam Melting. Göteborg : Chalmers University of Technology
BibTeX
@mastersthesis{
Malm2018,
author={Malm, Calle},
title={Measurement and Validation for Electron Beam Melting},
abstract={Magnetic lenses are crucial components in the electron beam melting process used
for 3d-printing at Arcam. Validating that the lenses going into machine production
are within specification is important. Therefore, this thesis has modified and
confirmed a measurement setup, the field mapper, to be used for measurement and
validation of magnetic lenses. The field mapper was then used to investigate normal
behaviour of the focus and deflection lenses going into machine production as well as
recreating defects of faulty lenses of the deflection and astigmatism lens to ascertain
if machine integrity is compromised for respective defect. The focus lens revealed
a non-significant spread, the deflection lens presented a wider spread that is easily
compensated for in the machine calibration process, and for the comparison between
an astigmatism lens to the same lens with an introduced winding error a significant
change in the centre of zero-field was seen.},
publisher={Institutionen för rymd-, geo- och miljövetenskap, Chalmers tekniska högskola},
place={Göteborg},
year={2018},
keywords={Magnetic lens, electron beam melting, electron optics, focus, deflection,},
note={58},
}
RefWorks
RT Generic
SR Electronic
ID 256313
A1 Malm, Calle
T1 Measurement and Validation for Electron Beam Melting
YR 2018
AB Magnetic lenses are crucial components in the electron beam melting process used
for 3d-printing at Arcam. Validating that the lenses going into machine production
are within specification is important. Therefore, this thesis has modified and
confirmed a measurement setup, the field mapper, to be used for measurement and
validation of magnetic lenses. The field mapper was then used to investigate normal
behaviour of the focus and deflection lenses going into machine production as well as
recreating defects of faulty lenses of the deflection and astigmatism lens to ascertain
if machine integrity is compromised for respective defect. The focus lens revealed
a non-significant spread, the deflection lens presented a wider spread that is easily
compensated for in the machine calibration process, and for the comparison between
an astigmatism lens to the same lens with an introduced winding error a significant
change in the centre of zero-field was seen.
PB Institutionen för rymd-, geo- och miljövetenskap, Chalmers tekniska högskola,
LA eng
LK http://publications.lib.chalmers.se/records/fulltext/256313/256313.pdf
OL 30
