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

Title
Design of a shape memory composite(SMC) using 4D printing technology
Author
이선영
Keywords
FDM (fused deposition modeling); SMAs (shape memory alloys); SMPs (shape memory polymers); SMC (shape memory composite); SME (shape memory effect); Nitinol wire; PLA; Flexible PLA; 3D printing; 4D printing; Revisible actuator
Issue Date
2018-11
Publisher
ELSEVIER SCIENCE SA
Citation
SENSORS AND ACTUATORS A-PHYSICAL, v. 283, Page. 187-195
Abstract
A fused deposition modeling (FDM) tool was used to fabricate a shape memory composite (SMC) that combined a shape memory alloy (SMA) with a shape memory polymer (SMP). The SMA caused a shape memory effect due to a phase change between martensite and austenite phases, in turn due to a temperature change. Also, the SMP had a shape memory effect caused by changes in the proportions of hard and soft segments near the glass transition temperature (Tg). Usually, common SMAs and SMPs are not reversible, so these materials do not go back to their original shapes once they are deformed. In this study, we fabricated 4D printing actuator via reversible SMC actuations using 3D printing technology. Nylon 12 was used as the 3D printing material in filament form. Moreover, the volume fraction of SMA to SMP was varied to find the optimum ratio for good operation cycles. A volume fraction of SMA:SMP of 1:5 showed the largest length change, of 8 mm, and the most rapid response time, of 4 s in overall dimension of 140mm x lOmm x lmm (lengthxwidthx thickness).Thus, the SMC showed promising results for the application of stents and valve controllers that could be manufactured by 3D printing technology. (C) 2018 Elsevier B.V. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S0924424717323270http://repository.hanyang.ac.kr/handle/20.500.11754/98799
ISSN
0924-4247
DOI
10.1016/j.sna.2018.08.049
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE