A preliminary investigation on cross-foldable design in 4D printing
In 4D printing, a printed smart structure would fold or unfold upon an external stimulus. In prior research, the hinges in the smart structure always fold or unfold individually with no crossing or overlap. The design complexity of the smart structure is increased by increasing the total number of...
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sg-ntu-dr.10356-882952020-09-24T20:11:39Z A preliminary investigation on cross-foldable design in 4D printing Teoh, Joanne Ee Mei An, Jia Chua, Chee Kai Liu, Yong School of Mechanical and Aerospace Engineering Proceedings of the 3rd International Conference on Progress in Additive Manufacturing (Pro-AM 2018) Singapore Centre for 3D Printing 4D Printing Smart Structures DRNTU::Engineering::Mechanical engineering::Prototyping In 4D printing, a printed smart structure would fold or unfold upon an external stimulus. In prior research, the hinges in the smart structure always fold or unfold individually with no crossing or overlap. The design complexity of the smart structure is increased by increasing the total number of hinges. In this research, cross-folding is investigated. Here cross-folding is defined as two overlapping folds in a single hinge. In particular, this research investigates the effect of thickness on cross-folding smart structures. It is found that hinge thickness affects the repeatability of cross-folding. A hinge with a thickness of 0.5 mm could be cross-folded three times prior to fracture whilst a hinge with a thickness of 0.3 mm could be cross-folded only once prior to fracture. A hinge with a thickness of 0.1 mm could not even be cross-folded without cracking. The introduction of a physical hole in the centre of the folding/unfolding line provided stress relief and prevented fracture. NRF (Natl Research Foundation, S’pore) Published version 2018-08-30T07:24:17Z 2019-12-06T17:00:04Z 2018-08-30T07:24:17Z 2019-12-06T17:00:04Z 2018 Conference Paper Teoh, J. E. M., An, J., Chua, C. K., & Liu, Y. (2018). A preliminary investigation on cross-foldable design in 4D printing. Proceedings of the 3rd International Conference on Progress in Additive Manufacturing (Pro-AM 2018), 202-207. doi:10.25341/D4XS37 https://hdl.handle.net/10356/88295 http://hdl.handle.net/10220/45766 10.25341/D4XS37 en © 2018 Nanyang Technological University. Published by Nanyang Technological University, Singapore. 6 p. application/pdf |
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4D Printing Smart Structures DRNTU::Engineering::Mechanical engineering::Prototyping Teoh, Joanne Ee Mei An, Jia Chua, Chee Kai Liu, Yong A preliminary investigation on cross-foldable design in 4D printing |
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In 4D printing, a printed smart structure would fold or unfold upon an external stimulus.
In prior research, the hinges in the smart structure always fold or unfold individually with no crossing
or overlap. The design complexity of the smart structure is increased by increasing the total number of hinges. In this research, cross-folding is investigated. Here cross-folding is defined as two overlapping folds in a single hinge. In particular, this research investigates the effect of thickness on cross-folding smart structures. It is found that hinge thickness affects the repeatability of cross-folding. A hinge with a thickness of 0.5 mm could be cross-folded three times prior to fracture whilst a hinge with a thickness of 0.3 mm could be cross-folded only once prior to fracture. A hinge with a thickness of 0.1 mm could not even be cross-folded without cracking. The introduction of a physical hole in the centre of the folding/unfolding line provided stress relief and prevented fracture. |
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School of Mechanical and Aerospace Engineering |
author_facet |
School of Mechanical and Aerospace Engineering Teoh, Joanne Ee Mei An, Jia Chua, Chee Kai Liu, Yong |
format |
Conference or Workshop Item |
author |
Teoh, Joanne Ee Mei An, Jia Chua, Chee Kai Liu, Yong |
author_sort |
Teoh, Joanne Ee Mei |
title |
A preliminary investigation on cross-foldable design in 4D printing |
title_short |
A preliminary investigation on cross-foldable design in 4D printing |
title_full |
A preliminary investigation on cross-foldable design in 4D printing |
title_fullStr |
A preliminary investigation on cross-foldable design in 4D printing |
title_full_unstemmed |
A preliminary investigation on cross-foldable design in 4D printing |
title_sort |
preliminary investigation on cross-foldable design in 4d printing |
publishDate |
2018 |
url |
https://hdl.handle.net/10356/88295 http://hdl.handle.net/10220/45766 |
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1681057126654410752 |