TY - GEN
T1 - Characterizing thermal expansion of large-scale 3D printed parts
AU - Hoskins, Dylan
AU - Kunc, Vlastimil
AU - Hassen, Ahmed
AU - Lindahl, John
AU - Duty, Chad
N1 - Publisher Copyright:
Copyright 2019. Used by the Society of the Advancement of Material and Process Engineering with permission.
PY - 2019
Y1 - 2019
N2 - Additively manufactured parts have an inherent mesostructure as a result of printing artifacts. The build structure is defined by parameters such as infill pattern, raster spacing, and bead height, and can impart anisotropic thermo-mechanical properties that are different from the bulk properties of the feedstock. The anisotropy is more pronounced when printing with fiber reinforced polymers due to the shear-alignment of fibers during the extrusion process. This study evaluates the combined effects of the printed mesostructure and the fiber-aligned microstructure on the coefficient of thermal expansion of large-scale printed parts. A digital image correlation-based method for recording thermal strain across the surface of a printed part is described. Measured values are compared to predictions based on laminate theory using the anisotropic material properties at the microscale for common raster orientations.
AB - Additively manufactured parts have an inherent mesostructure as a result of printing artifacts. The build structure is defined by parameters such as infill pattern, raster spacing, and bead height, and can impart anisotropic thermo-mechanical properties that are different from the bulk properties of the feedstock. The anisotropy is more pronounced when printing with fiber reinforced polymers due to the shear-alignment of fibers during the extrusion process. This study evaluates the combined effects of the printed mesostructure and the fiber-aligned microstructure on the coefficient of thermal expansion of large-scale printed parts. A digital image correlation-based method for recording thermal strain across the surface of a printed part is described. Measured values are compared to predictions based on laminate theory using the anisotropic material properties at the microscale for common raster orientations.
UR - http://www.scopus.com/inward/record.url?scp=85068803164&partnerID=8YFLogxK
U2 - 10.33599/nasampe/s.19.1598
DO - 10.33599/nasampe/s.19.1598
M3 - Conference contribution
AN - SCOPUS:85068803164
T3 - International SAMPE Technical Conference
BT - SAMPE Conference and Exhibition
A2 - Ahlstrom, Kevin
A2 - Anderson, Jacob Preston
A2 - Beckwith, Scott
A2 - Becnel, Andrew Craig
A2 - Biermann, Paul Joseph
A2 - Buchholz, Matt
A2 - Cates, Elizabeth
A2 - Gardner, Brian
A2 - Harris, Jim
A2 - Knight, Michael J.
A2 - Reyes-Villanueva, German
A2 - Scarborough, Stephen E.
A2 - Sears, Phil
A2 - Thomas, James
A2 - Thostenson, Erik T.
PB - Soc. for the Advancement of Material and Process Engineering
T2 - SAMPE 2019 Conference and Exhibition
Y2 - 20 May 2019 through 23 May 2019
ER -