Contour generation for mask projection stereolithography 3D printing

Recent advancement in 3D printing technology has led to the development of projection mask stereolithography 3D printing process. This process harnesses the power of UV light contour projection to cure photocurable resin. The contour projection is generated by slicing STL CAD model into layers of 2D...

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Main Author:	Faeiz Azizi, Adnan
Format:	Thesis
Language:	English
Published:	2019
Subjects:	Q Science (General) T Technology (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/30033/1/Contour%20generation%20for%20mask%20projection%20stereolithography%203d%20printing.wm.pdf
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id	my-ump-ir.30033
record_format	uketd_dc
spelling	my-ump-ir.300332023-05-29T03:56:09Z Contour generation for mask projection stereolithography 3D printing 2019-07 Faeiz Azizi, Adnan Q Science (General) T Technology (General) Recent advancement in 3D printing technology has led to the development of projection mask stereolithography 3D printing process. This process harnesses the power of UV light contour projection to cure photocurable resin. The contour projection is generated by slicing STL CAD model into layers of 2D contours which is then fed into the UV projection device layer-by-layer with respect to the build height. Generation of the layers are computationally intensive. Existing contour generation algorithm requires long computational time to generate the contour layers especially for high polygon models. This is because the existing approach has to slice and compute every single layer of the STL model before the printing process starts. In an effort to reduce the computational time, a new and faster algorithm is required. Thus, a real-time contour generation algorithm is presented in this research. The real-time contour generation approach instantly generates single layer of contour whenever the build height parameter is fed into the algorithm. The algorithm composes of multiple algorithms such as slicing algorithm, pixel line mapping algorithm, and the contour loop algorithm. The proposed slicing algorithm uses line-plane intersection model to generate arbitrary line segment when it receives an STL facet. These line segments are mapped based on the projection device display resolution by the pixel-line mapping algorithm. Then, the pixelated line segments are connected to form single/multiple contour loops using contour loop algorithm. The results of each algorithms are thoroughly evaluated. Computation time measurement is taken using <QElapsedTimer> object in Qt Creator and measured in milliseconds. It is later found that the algorithms able to correctly generates the contour projection layers. Even with the high polygon STL model, the contour generation algorithm able to perform on average 960.15% faster than Park algorithm and 169.18% faster than commercial software Slic3r. 2019-07 Thesis http://umpir.ump.edu.my/id/eprint/30033/ http://umpir.ump.edu.my/id/eprint/30033/1/Contour%20generation%20for%20mask%20projection%20stereolithography%203d%20printing.wm.pdf pdf en public masters Universiti Malaysia Pahang Faculty of Mechanical & Manufacturing Engineering Mohd Romlay, Fadhlur Rahman
institution	Universiti Malaysia Pahang Al-Sultan Abdullah
collection	UMPSA Institutional Repository
language	English
advisor	Mohd Romlay, Fadhlur Rahman
topic	Q Science (General) T Technology (General)
spellingShingle	Q Science (General) T Technology (General) Faeiz Azizi, Adnan Contour generation for mask projection stereolithography 3D printing
description	Recent advancement in 3D printing technology has led to the development of projection mask stereolithography 3D printing process. This process harnesses the power of UV light contour projection to cure photocurable resin. The contour projection is generated by slicing STL CAD model into layers of 2D contours which is then fed into the UV projection device layer-by-layer with respect to the build height. Generation of the layers are computationally intensive. Existing contour generation algorithm requires long computational time to generate the contour layers especially for high polygon models. This is because the existing approach has to slice and compute every single layer of the STL model before the printing process starts. In an effort to reduce the computational time, a new and faster algorithm is required. Thus, a real-time contour generation algorithm is presented in this research. The real-time contour generation approach instantly generates single layer of contour whenever the build height parameter is fed into the algorithm. The algorithm composes of multiple algorithms such as slicing algorithm, pixel line mapping algorithm, and the contour loop algorithm. The proposed slicing algorithm uses line-plane intersection model to generate arbitrary line segment when it receives an STL facet. These line segments are mapped based on the projection device display resolution by the pixel-line mapping algorithm. Then, the pixelated line segments are connected to form single/multiple contour loops using contour loop algorithm. The results of each algorithms are thoroughly evaluated. Computation time measurement is taken using <QElapsedTimer> object in Qt Creator and measured in milliseconds. It is later found that the algorithms able to correctly generates the contour projection layers. Even with the high polygon STL model, the contour generation algorithm able to perform on average 960.15% faster than Park algorithm and 169.18% faster than commercial software Slic3r.
format	Thesis
qualification_level	Master's degree
author	Faeiz Azizi, Adnan
author_facet	Faeiz Azizi, Adnan
author_sort	Faeiz Azizi, Adnan
title	Contour generation for mask projection stereolithography 3D printing
title_short	Contour generation for mask projection stereolithography 3D printing
title_full	Contour generation for mask projection stereolithography 3D printing
title_fullStr	Contour generation for mask projection stereolithography 3D printing
title_full_unstemmed	Contour generation for mask projection stereolithography 3D printing
title_sort	contour generation for mask projection stereolithography 3d printing
granting_institution	Universiti Malaysia Pahang
granting_department	Faculty of Mechanical & Manufacturing Engineering
publishDate	2019
url	http://umpir.ump.edu.my/id/eprint/30033/1/Contour%20generation%20for%20mask%20projection%20stereolithography%203d%20printing.wm.pdf
_version_	1783732133033934848

Contour generation for mask projection stereolithography 3D printing

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