Microstructure Control in 3D Printing with Digital Light Processing

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Abstract

Digital light processing stereolithography is a promising technique for 3D printing. However, it offers little control over the surface appearance of the printed object. The printing process is typically layered, which leads to aliasing artefacts that affect surface appearance. An antialiasing option is to use greyscale pixel values in the layer images that we supply to the printer. This enables a kind of subvoxel growth control. We explore this concept and use it for editing surface microstructure. In other words, we modify the surface appearance of a printed object by applying a greyscale pattern to the surface voxels before sending the cross-sectional layer images to the printer. We find that a smooth noise function is an excellent tool for varying surface roughness and for breaking the regularities that lead to aliasing. Conversely, we also present examples that introduce regularities to produce controlled anisotropic surface appearance. Our hope is that subvoxel growth control in stereolithography can lead 3D printing towards customizable surface appearance. The printing process adds what we call ground noise to the printed result. We suggest a way of modelling this ground noise to provide users with a tool for estimating a printer's ability to control surface reflectance.

Original languageEnglish
JournalComputer Graphics Forum
ISSN0167-7055
DOIs
Publication statusAccepted/In press - 2019

Keywords

  • 3D printing
  • Additive manufacturing
  • Appearance
  • BRDF
  • Fabrication
  • Reflectance
  • Surface roughness

Cite this

@article{51bedb25127a4a80968dc297e1dde301,
title = "Microstructure Control in 3D Printing with Digital Light Processing",
abstract = "Digital light processing stereolithography is a promising technique for 3D printing. However, it offers little control over the surface appearance of the printed object. The printing process is typically layered, which leads to aliasing artefacts that affect surface appearance. An antialiasing option is to use greyscale pixel values in the layer images that we supply to the printer. This enables a kind of subvoxel growth control. We explore this concept and use it for editing surface microstructure. In other words, we modify the surface appearance of a printed object by applying a greyscale pattern to the surface voxels before sending the cross-sectional layer images to the printer. We find that a smooth noise function is an excellent tool for varying surface roughness and for breaking the regularities that lead to aliasing. Conversely, we also present examples that introduce regularities to produce controlled anisotropic surface appearance. Our hope is that subvoxel growth control in stereolithography can lead 3D printing towards customizable surface appearance. The printing process adds what we call ground noise to the printed result. We suggest a way of modelling this ground noise to provide users with a tool for estimating a printer's ability to control surface reflectance.",
keywords = "3D printing, Additive manufacturing, Appearance, BRDF, Fabrication, Reflectance, Surface roughness",
author = "A. Luongo and V. Falster and Doest, {M. B.} and Ribo, {M. M.} and Eiriksson, {E. R.} and Pedersen, {D. B.} and Frisvad, {J. R.}",
year = "2019",
doi = "10.1111/cgf.13807",
language = "English",
journal = "Computer Graphics Forum (Online)",
issn = "1467-8659",
publisher = "Wiley-Blackwell",

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TY - JOUR

T1 - Microstructure Control in 3D Printing with Digital Light Processing

AU - Luongo, A.

AU - Falster, V.

AU - Doest, M. B.

AU - Ribo, M. M.

AU - Eiriksson, E. R.

AU - Pedersen, D. B.

AU - Frisvad, J. R.

PY - 2019

Y1 - 2019

N2 - Digital light processing stereolithography is a promising technique for 3D printing. However, it offers little control over the surface appearance of the printed object. The printing process is typically layered, which leads to aliasing artefacts that affect surface appearance. An antialiasing option is to use greyscale pixel values in the layer images that we supply to the printer. This enables a kind of subvoxel growth control. We explore this concept and use it for editing surface microstructure. In other words, we modify the surface appearance of a printed object by applying a greyscale pattern to the surface voxels before sending the cross-sectional layer images to the printer. We find that a smooth noise function is an excellent tool for varying surface roughness and for breaking the regularities that lead to aliasing. Conversely, we also present examples that introduce regularities to produce controlled anisotropic surface appearance. Our hope is that subvoxel growth control in stereolithography can lead 3D printing towards customizable surface appearance. The printing process adds what we call ground noise to the printed result. We suggest a way of modelling this ground noise to provide users with a tool for estimating a printer's ability to control surface reflectance.

AB - Digital light processing stereolithography is a promising technique for 3D printing. However, it offers little control over the surface appearance of the printed object. The printing process is typically layered, which leads to aliasing artefacts that affect surface appearance. An antialiasing option is to use greyscale pixel values in the layer images that we supply to the printer. This enables a kind of subvoxel growth control. We explore this concept and use it for editing surface microstructure. In other words, we modify the surface appearance of a printed object by applying a greyscale pattern to the surface voxels before sending the cross-sectional layer images to the printer. We find that a smooth noise function is an excellent tool for varying surface roughness and for breaking the regularities that lead to aliasing. Conversely, we also present examples that introduce regularities to produce controlled anisotropic surface appearance. Our hope is that subvoxel growth control in stereolithography can lead 3D printing towards customizable surface appearance. The printing process adds what we call ground noise to the printed result. We suggest a way of modelling this ground noise to provide users with a tool for estimating a printer's ability to control surface reflectance.

KW - 3D printing

KW - Additive manufacturing

KW - Appearance

KW - BRDF

KW - Fabrication

KW - Reflectance

KW - Surface roughness

U2 - 10.1111/cgf.13807

DO - 10.1111/cgf.13807

M3 - Journal article

JO - Computer Graphics Forum (Online)

JF - Computer Graphics Forum (Online)

SN - 1467-8659

ER -