Additively manufactured parts typically deviate
to some extent from the targeted net shape and exhibit
high surface roughness due to the size of the powder
grains that determines the minimum thickness of the individual
slices and due to partially molten powder grains
adhering on the surface. Optical coherence tomography
(OCT)-based measurements and closed-loop controlled
ablation with ultrashort laser pulses were utilized for
the precise positioning of the LPBF-generated aluminum
parts and for post-processing by selective laser ablation of
the excessive material. As a result, high-quality net shape
geometries were achieved with surface roughness, and
deviation from the targeted net shape geometry reduced
by 67% and 63%, respectively.
%0 Journal Article
%1 holder2020highquality
%A Holder, Daniel
%A Leis, Artur
%A Buser, Matthias
%A Weber, Rudolf
%A Graf, Thomas
%D 2020
%J Advanced Optical Technologies
%K ablation myown oct peer
%P 101-110
%R https://doi.org/10.1515/aot-2019-0065
%T High-quality net shape geometries from additively
manufactured parts using closed-loop controlled
ablation with ultrashort laser pulses
%V 9
%X Additively manufactured parts typically deviate
to some extent from the targeted net shape and exhibit
high surface roughness due to the size of the powder
grains that determines the minimum thickness of the individual
slices and due to partially molten powder grains
adhering on the surface. Optical coherence tomography
(OCT)-based measurements and closed-loop controlled
ablation with ultrashort laser pulses were utilized for
the precise positioning of the LPBF-generated aluminum
parts and for post-processing by selective laser ablation of
the excessive material. As a result, high-quality net shape
geometries were achieved with surface roughness, and
deviation from the targeted net shape geometry reduced
by 67% and 63%, respectively.
@article{holder2020highquality,
abstract = {Additively manufactured parts typically deviate
to some extent from the targeted net shape and exhibit
high surface roughness due to the size of the powder
grains that determines the minimum thickness of the individual
slices and due to partially molten powder grains
adhering on the surface. Optical coherence tomography
(OCT)-based measurements and closed-loop controlled
ablation with ultrashort laser pulses were utilized for
the precise positioning of the LPBF-generated aluminum
parts and for post-processing by selective laser ablation of
the excessive material. As a result, high-quality net shape
geometries were achieved with surface roughness, and
deviation from the targeted net shape geometry reduced
by 67% and 63%, respectively.},
added-at = {2020-10-02T15:43:45.000+0200},
author = {Holder, Daniel and Leis, Artur and Buser, Matthias and Weber, Rudolf and Graf, Thomas},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/211ca5e2151ebac55485a9732f0559bb4/danielholder},
doi = {https://doi.org/10.1515/aot-2019-0065},
interhash = {9c066ec9dc52b1c7988272c9665c386a},
intrahash = {11ca5e2151ebac55485a9732f0559bb4},
journal = {Advanced Optical Technologies},
keywords = {ablation myown oct peer},
month = {March},
pages = {101-110},
timestamp = {2020-10-02T13:43:45.000+0200},
title = {High-quality net shape geometries from additively
manufactured parts using closed-loop controlled
ablation with ultrashort laser pulses},
volume = 9,
year = 2020
}