Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/88295
Title: A preliminary investigation on cross-foldable design in 4D printing
Authors: Teoh, Joanne Ee Mei
An, Jia
Chua, Chee Kai
Liu, Yong
Keywords: 4D Printing
Smart Structures
DRNTU::Engineering::Mechanical engineering::Prototyping
Issue Date: 2018
Source: 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
Abstract: 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.
URI: https://hdl.handle.net/10356/88295
http://hdl.handle.net/10220/45766
DOI: https://doi.org/10.25341/D4XS37
Rights: © 2018 Nanyang Technological University. Published by Nanyang Technological University, Singapore.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:Pro-AM Conference Papers

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