NSF PAR Search | NSF Public Access Repository

Note: When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external site maintained by the publisher. Some full text articles may not yet be available without a charge during the embargo (administrative interval).
What is a DOI Number?

Some links on this page may take you to non-federal websites. Their policies may differ from this site.

Harnessing irreversible thermal strain for shape memory in polymer additive manufacturing

https://doi.org/10.1002/app.48239

D'Amico, Tone P.; Barrett, Connor; Presing, Joseph; Patnayakuni, Roshni; Pourali, Masoumeh; Peterson, Amy M. (July 2019, Journal of Applied Polymer Science)

ABSTRACT Shape transformation upon annealing of fused filament fabrication additively manufacturing structures is investigated as a one‐way shape memory strategy using commodity thermoplastics. Irreversible thermal strain, which is a measurement of shape transformation upon annealing, is shown to depend on both raster angle and layer thickness, both of which are parameters than can be easily adjusted on most FFF printers. We present an algorithm based on our understanding of the underlying micromechanics of the system that allows for input of desired final dimensions and output the necessary print parameters. We also demonstrate that this approach is extensible to other materials and report more complex shape memory geometries. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2019,136, 48239.
more » « less
The effects of toolpath and glass fiber reinforcement on bond strength and dimensional accuracy in material extrusion of a hot melt adhesive

https://doi.org/10.1016/j.addma.2022.103056

Pourali, Masoumeh; Peterson, Amy M. (October 2022, Additive Manufacturing)

Full Text Available
A tale of two polyamides: Comparing the crystallization kinetics of a hot-melt adhesive and a PA 6/66 copolymer

https://doi.org/10.1016/j.tca.2022.179176

Pourali, Masoumeh; Peterson, Amy M. (April 2022, Thermochimica Acta)

Full Text Available
Fused filament fabrication of void-free parts using low viscosity hot melt adhesives

https://doi.org/10.1016/j.addma.2021.102110

Pourali, Masoumeh; Peterson, Amy M. (October 2021, Additive Manufacturing)

Full Text Available
Bead parameterization of desktop and room-scale material extrusion additive manufacturing: How print speed and thermal properties affect heat transfer

https://doi.org/10.1016/j.addma.2020.101239

D’Amico, Tone; Peterson, Amy M. (August 2020, Additive Manufacturing)

Full Text Available

Search for: All records