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https://hdl.handle.net/10356/64951
Title: | 4D printing of heat-driven self-assembly structures (Part II) | Authors: | Teo, Jin Howe | Keywords: | DRNTU::Engineering::Manufacturing::Polymers and plastics DRNTU::Engineering::Mechanical engineering::Prototyping |
Issue Date: | 2015 | Abstract: | Due to multi-material 3D printing technology developed in recent times, the new concept of 4D printing has emerged. In 4D printing, besides the regular three dimensions, the fourth dimension is time-dependent shape change of the printed product. This allows models to be printed in a specific form and activated by external stimulus to change its shape in a controlled method, hence opening the possibility of self-assembled structures. This creates a myriad of applications in situations where manual assembly of a structure is neither favoured nor possible. This project investigates and develops devices that facilitate the design and modeling of multistage folding process in self-assembling 4D printed structures with heat-driven shape memory polymers. First, the fabrication conditions of heat-driven self-assembly structures are examined. Hinges are printed with varying materials and dimensional parameters, and the resulting recovery time and the angle integrity are analysed. Next, two multi-stage folding techniques – insulating overlay and localized material variation are developed and tested. Finally, using the most effective multi-stage technique – localized material variation, an origami glider is designed to demonstrate the multi-stage folding in application. | URI: | http://hdl.handle.net/10356/64951 | Schools: | School of Mechanical and Aerospace Engineering | Research Centres: | NTU Additive Manufacturing Centre | Rights: | Nanyang Technological University | Fulltext Permission: | restricted | Fulltext Availability: | With Fulltext |
Appears in Collections: | MAE Student Reports (FYP/IA/PA/PI) |
Files in This Item:
File | Description | Size | Format | |
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4D PRINTING OF HEAT-DRIVEN SELF-ASSEMBLY STRUCTURES (PART II).pdf Restricted Access | 1.14 MB | Adobe PDF | View/Open |
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