TY - GEN
T1 - DEVELOPMENT OF SUB-SURFACE LASER ADDITIVE MANUFACTURING PROCESS FOR LIQUID RESINS
AU - Riggs, Patrick
AU - Silva, Julio
AU - Quirino, Rafael
AU - Ahmed, Hossain
N1 - Publisher Copyright:
Copyright © 2023 by ASME.
PY - 2023
Y1 - 2023
N2 - The goal of the present study is to develop original research revolving around plastics-based Laser Additive Manufacturing (LAM) that seeks to improve the current quality, print time, strength, and post-processing needed for LAM. This is accomplished through repurposing a sub-surface laser engraving (SSLE) machine that solidifies bio-resin through thermal polymerization. SSLE machines are traditionally used to create greyscale art pieces that are suspended in a solid crystal block. This is accomplished through focusing the laser below the top surface of the crystal and creating micro-fractures in the material that are around 20 – 30 µm in size. By keeping the same general process of SSLE, but changing what medium the laser interacts with, this experimental research seeks to replace the micro-fractures with micro-solids through laser induced thermal polymerization in resin. A resin with 50% (weight) of Tung oil is considered for its eco-friendliness. An SSLE machine equipped with a diode pumped Nd: YAG laser is customized to focus laser energy at the subsurface of the resin medium. Several advantages are hypothesized for this new additive manufacturing technique including the elimination of strictly defined layer lines, no longer needing a build plate for the part to build from, the absence of support material as any overhangs will be suspended in the uncured resin, enhancement of surface quality, and the improved strength found from a proposed Body Centered Cubic (BCC) lattice structure of the points. In combining these unprecedented advantages, it is expected that the Sub-Surface Laser Additive Manufacturing (SSLAM) would be an industry-leading advancement with a wide range of applications for commercial product development.
AB - The goal of the present study is to develop original research revolving around plastics-based Laser Additive Manufacturing (LAM) that seeks to improve the current quality, print time, strength, and post-processing needed for LAM. This is accomplished through repurposing a sub-surface laser engraving (SSLE) machine that solidifies bio-resin through thermal polymerization. SSLE machines are traditionally used to create greyscale art pieces that are suspended in a solid crystal block. This is accomplished through focusing the laser below the top surface of the crystal and creating micro-fractures in the material that are around 20 – 30 µm in size. By keeping the same general process of SSLE, but changing what medium the laser interacts with, this experimental research seeks to replace the micro-fractures with micro-solids through laser induced thermal polymerization in resin. A resin with 50% (weight) of Tung oil is considered for its eco-friendliness. An SSLE machine equipped with a diode pumped Nd: YAG laser is customized to focus laser energy at the subsurface of the resin medium. Several advantages are hypothesized for this new additive manufacturing technique including the elimination of strictly defined layer lines, no longer needing a build plate for the part to build from, the absence of support material as any overhangs will be suspended in the uncured resin, enhancement of surface quality, and the improved strength found from a proposed Body Centered Cubic (BCC) lattice structure of the points. In combining these unprecedented advantages, it is expected that the Sub-Surface Laser Additive Manufacturing (SSLAM) would be an industry-leading advancement with a wide range of applications for commercial product development.
KW - 3D Printing
KW - Additive Manufacturing
KW - Bio-Resin
KW - Laser
KW - Laser Additive Manufacturing
KW - Resin 3D Printing
KW - Sub-surface
KW - photopolymerization
KW - thermal polymerization
UR - http://www.scopus.com/inward/record.url?scp=85185394246&partnerID=8YFLogxK
U2 - 10.1115/IMECE2023-113748
DO - 10.1115/IMECE2023-113748
M3 - Conference article
AN - SCOPUS:85185394246
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
BT - Advanced Manufacturing
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2023 International Mechanical Engineering Congress and Exposition, IMECE 2023
Y2 - 29 October 2023 through 2 November 2023
ER -