Date

2018

Author

Mert, Mehmet Levend

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3D printing is a manufacturing process which generates a physical, three-dimensional object from a digital design. In our day, there exist lots of devices, called 3D printers, having different working principles and using various materials for this manufacturing process. A model designed digitally can be transformed into a three-dimensional object in the real world by 3D printers. The elasticity of objects created by 3D printers depends on the materials used during manufacturing and the digital designs. If the digital design would be transformed into an object after 3D printing is modified properly, the printed object can be more flexible even though the material used during manufacturing remains the same. In this thesis, we propose methods for extracting auxetic patterns from 3D printable digital designs by modifying the existing mesh primitives directly and fully-automatically. Proposed methods were employed to extract auxetic patterns from some digital designs. These extracted auxetic patterns were 3D printed. It was observed that 3D printed objects from extracted auxetic patterns are more flexible when they are compared to 3D printed objects from the original digital designs. Benefits of extracting auxetic patterns from digital designs and 3D print them instead of the original digital designs were revealed. Besides, challenges of 3D printing extracted auxetic patterns and how to deal with these challenges were also referred. Finally, constraints and performances of the proposed methods were explained and acquired results of these methods for different digital designs were compared.  

Subject Keywords

Three-dimensional printing., Manufacturing processes., Manufacturing industries.

URI

http://etd.lib.metu.edu.tr/upload/12621834/index.pdf
https://hdl.handle.net/11511/27039

Collections

Graduate School of Natural and Applied Sciences, Thesis