In this work, the stress relaxation behavior of 3D printed PLA was experimentally investigated and analytically modeled. First, a quasi-static tensile characterization of additively manufactured samples was conducted by considering the effect of printing parameters like the material infill orientation and the outer wall presence. The effect of two thermal conditioning treatments on the material tensile properties was also investigated. Successively, stress relaxation tests were conducted, on both treated and unconditioned specimens, undergoing three different strains levels. Analytical predictive models of the viscous behavior of additive manufactured material were compared, highlighting and discussing the effects of considered printing parameters.

Stress Relaxation Behavior of Additively Manufactured Polylactic Acid (PLA) / Bertocco, A.; Bruno, M.; Armentani, E.; Esposito, L.; Perrella, M.. - In: MATERIALS. - ISSN 1996-1944. - 15:10(2022), p. 3509. [10.3390/ma15103509]

Stress Relaxation Behavior of Additively Manufactured Polylactic Acid (PLA)

Bertocco A.
Primo
;
Bruno M.;Armentani E.;Esposito L.;Perrella M.
Ultimo
2022

Abstract

In this work, the stress relaxation behavior of 3D printed PLA was experimentally investigated and analytically modeled. First, a quasi-static tensile characterization of additively manufactured samples was conducted by considering the effect of printing parameters like the material infill orientation and the outer wall presence. The effect of two thermal conditioning treatments on the material tensile properties was also investigated. Successively, stress relaxation tests were conducted, on both treated and unconditioned specimens, undergoing three different strains levels. Analytical predictive models of the viscous behavior of additive manufactured material were compared, highlighting and discussing the effects of considered printing parameters.
2022
Stress Relaxation Behavior of Additively Manufactured Polylactic Acid (PLA) / Bertocco, A.; Bruno, M.; Armentani, E.; Esposito, L.; Perrella, M.. - In: MATERIALS. - ISSN 1996-1944. - 15:10(2022), p. 3509. [10.3390/ma15103509]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/887614
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