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research article

A 4D printed active compliant hinge for potential space applications using shape memory alloys and polymers

Testoni, Oleg
•
Lumpe, Thomas
•
Huang, Jian-Lin  
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August 1, 2021
Smart Materials And Structures

This paper presents the proof-of-concept for a 4D printed active compliant hinge with a selectively variable stiffness for the deployment and reorientation of satellite appendages. We use 4D printing to create an active compliant hinge capable of bending to a given angular position, holding the position without consuming energy and reorienting itself multiple times in a slow and controlled manner without using rigid mechanisms and, therefore, requiring no lubrication. The deployment and the reorientation of the hinge are achieved by exploiting thermally induced stiffness modulation of one of the constituting materials and two antagonistic shape memory alloy actuators. The hinge is specifically designed for the case study of a 6U CubeSat with two orientable solar panels. In this work, we first explain the working principle of the hinge and propose three different actuation strategies to increase the energy collection of the considered CubeSat. Second, we describe the specific functional and geometric requirements of the hinge, the resulting design and the fabricated functional prototype. The latter is tested in a standard laboratory environment to measure the range of motion, the energy consumption and the actuation time. Finally, the feasibility of the three proposed actuation strategies is evaluated considering the corresponding net increase in collected energy. The results show that the hinge is compatible with the stowing requirements and capable of achieving maximum angular positions larger than 90 degrees in both directions and holding any intermediate position with an accuracy of less than 3 degrees. The three actuation strategies considered lead, in a standard laboratory environment, to an increase in energy generation between 54% and 72%.

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Type
research article
DOI
10.1088/1361-665X/ac01fa
Web of Science ID

WOS:000664733200001

Author(s)
Testoni, Oleg
Lumpe, Thomas
Huang, Jian-Lin  
Wagner, Marius
Bodkhe, Sampada
Zhakypov, Zhenishbek  
Spolenak, Ralph
Paik, Jamie  
Ermanni, Paolo
Munoz, Luis
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Date Issued

2021-08-01

Publisher

IOP PUBLISHING LTD

Published in
Smart Materials And Structures
Volume

30

Issue

8

Article Number

085004

Subjects

Instruments & Instrumentation

•

Materials Science, Multidisciplinary

•

Materials Science

•

compliant hinge

•

4d printing

•

selective stiffness

•

cubesats

•

shape memory materials

•

solar panel system

•

composites

•

coatings

•

technology

•

radiation

•

vacuum

•

design

•

array

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
RRL  
Available on Infoscience
July 17, 2021
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/179992
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