Shape memory and mechanical characterization of polylactic acid wood composite fabricated by fused filament fabrication 4D printing technology

2021 ◽  
Vol 52 (6) ◽  
pp. 635-643
Author(s):  
A. Sharma ◽  
A.K.S. Singholi
Keyword(s):  
Shape Memory ◽  
Polylactic Acid ◽  
Mechanical Characterization ◽  
Wood Composite ◽  
4D Printing ◽  
Fused Filament Fabrication ◽  
Printing Technology

scholarly journals Attempts to Diminish the Drawbacks of Polylactic Acid Designed for 3D/4D Printing Technology-Fused Deposition Modeling

2021 ◽  
Vol 58 (1) ◽  
pp. 142-153
Author(s):  
Doina Dimonie ◽  
Nicoleta Dragomir ◽  
Rusandica Stoica
Keyword(s):  
3D Printing ◽  
Polylactic Acid ◽  
Fused Deposition Modeling ◽  
New Materials ◽  
4D Printing ◽  
Printing Technology ◽  
Fused Deposition ◽  
New Material ◽  
Deposition Modeling ◽  
Laboratory Line

In order to improve thermal behavior and dimensional strability of polylactic acid (PLA) designed both for 3D and 4D printing technology-fused deposition modeling (FDM) using a scalable procedure, the polymer was melt compounded with additives which control the morphology by crystallization and/or reinforcing. Using the formulations which provide polylactic acid (PLA) improved thermo-mechanical properties and desired dimensional stability, the new materials were shaped, on a laboratory line, as filaments for printing technology. The selected compounds were than scaled up on a 50 kg/h compounding line into granules which prove to have good shapability as filaments for printing technology (1.85 +/- 0.05 mm diameter, required ovality, good appearance and smooth surface) and performed properly at 3D printing. The obtained results proved that functional properties of PLA can be improved by various methods so that, depending on the reached performances, the new material can be converted through printing technology into items for performance applications. The novelty of the article is related to the fact that it identifies a modifying solution for controlling the morphology of a type of PLA designed for 3D printing that already has an advanced crystallinity.

Design of a shape memory composite(SMC) using 4D printing technology

2018 ◽  
Vol 283 ◽  
pp. 187-195 ◽  
Author(s):  
Minkyu Kang ◽  
Youngjun Pyo ◽  
Joon young Jang ◽  
Yunchan Park ◽  
Yeon-Ho Son ◽  
...  
Keyword(s):  
Shape Memory ◽  
4D Printing ◽  
Printing Technology ◽  
Shape Memory Composite

Thermo-mechanical Characterization of an Aged Ni45.3Ti39.7Hf10Pd5 Shape Memory Alloy

JOM ◽  
2020 ◽  
Author(s):  
E. Acar ◽  
G. P. Toker ◽  
S. Saedi ◽  
H. Tobe ◽  
H. E. Karaca
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Mechanical Characterization
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