NDLI: Shape-Memory Properties of 3D Printed PLA Structures

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Shape-Memory Properties of 3D Printed PLA Structures

Content Provider	MDPI
Author	Ehrmann, Guido Ehrmann, Andrea
Copyright Year	2020
Description	Polylactic acid (PLA) belongs to the few thermoplastic polymers that are derived from renewable resources such as corn starch or sugar cane. PLA is often used in 3D printing by fused deposition modeling (FDM) since it is relatively easy to print, does not show warping, and can be printed without a closed building chamber. On the other hand, PLA has interesting mechanical properties which are influenced by the printing parameters and geometries. Here we present shape-memory properties of PLA cubes with different infill patterns and percentages. We investigate the material response under defined quasi-static load as well as the possibility to restore the original 3D printed shape. The quasi-static flexural properties are linked to the porosity and the infill structure of the samples under investigation, examined optically and by simulations. Our results underline the importance of designing the infill patterns carefully to develop samples with desired mechanical properties.
Starting Page	6
e-ISSN	25043900
DOI	10.3390/CGPM2020-07198
Journal	Proceedings
Issue Number	1
Volume Number	69
Language	English
Publisher	MDPI
Publisher Date	2020-11-04
Access Restriction	Open
Subject Keyword	Proceedings Manufacturing Engineering Polylactic Acid Fused Deposition Modelling 3-point Bending Test Infill Parameters Infill Density Shape-memory Properties
Content Type	Text

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