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Optimizing shape memory performance in 4D-printed PLA hinges: an integrated study on geometry and process parameter effects

delete2025-10-10
delete0
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OA
AI
J
Jiazhao Huang
P
Pengyu Chen
C
Chu Long Tham
M
Muthu Vignesh Vellayappan
G
Guo Dong Goh
J
Jingyi Yang
X
Xiaoying Qi
D
David W. Rosen
M
Mui Ling Sharon Nai *
DOI：10.1016/j.matdes.2025.114879delete
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Abstract

Abstract

En 中文
• Optimized PLA hinge achieved 99.53% recovery after first folding cycle. • Recovery ratio dropped to ∼ 25 % after 50 cycles at 65 °C. • Training temperature governs trade-off between actuation speed and lifespan. • Origami-inspired structure with optimized hinge design fully deployed within 8 s.
Keywords:
4D additive manufacturing
Shape memory polymers
Polylactic acid
Fused deposition modeling
Smart structure
Foldable hinge
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Journal

M
Materials and Design
IF:
7.9
Papers:
1.9W
Citations:
9.8W

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