Rigidisation of deployable space polymer membranes by heat-activated self-folding

Rui Wu, Peter C.E. Roberts, Shida Lyu, Constantinos Soutis, Fei Zheng, Carl Diver, Matthieu Gresil, Jonny J. Blaker

Research output: Contribution to journalArticleResearchpeer-review

5 Citations (Scopus)

Abstract

Current gossamer space structures such as solar sails usually rely on bracing structures, inflation gas, or centrifugal force to deploy and maintain a structural shape, which leads to a system that is sometimes complicated, while a concise system can be achieved if the gossamer structure could self-rigidise and support load. The present study proposes a self-folding polymer membrane based on space-qualified materials and is potentially mass-producible by industrial roll-to-roll processes. It can permanently transform a flat gossamer membrane into a load-bearing 3D configuration when heated by sunlight in space, while the folding-induced shape bifurcation and buckling are prevented using a kirigami hinge design. The shape transformation is demonstrated in lab by a tubular and an origami structure that are formed from a flat membrane when heated to 82 °\C in oven. Thermal radiation analyses have also verified the feasibility of sunlight-activated folding in space when vapour-deposited metallic coatings are applied onto the hinges. The proposed material offers a new generation of gossamer space membrane that can automatically morph from a stowed configuration to a load-bearing structure, and potentially provide built-in functionalities.

Original languageEnglish
Article number105037
Number of pages12
JournalSmart Materials and Structures
Volume27
Issue number10
DOIs
Publication statusPublished - Oct 2018
Externally publishedYes

Keywords

  • Active material
  • bi-stable
  • kirigami
  • meta-structure
  • morphing
  • smart material

Cite this

Wu, R., Roberts, P. C. E., Lyu, S., Soutis, C., Zheng, F., Diver, C., Gresil, M., & Blaker, J. J. (2018). Rigidisation of deployable space polymer membranes by heat-activated self-folding. Smart Materials and Structures, 27(10), [105037]. https://doi.org/10.1088/1361-665X/aadc72