Investigation on Shape-Selectable Gradient Infill Patterns in Extrusion 3D Printing Systems

• Main Authors: Lau, Alan Kin Lun, 劉建麟
• Other Authors: Chang, Jen-Yuen (James)
• Format: Others
• Language: en_US
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/46040270138614704726

碩士 === 國立清華大學 === 動力機械工程學系 === 103 === The usage of 3D printing has become very popular in recent years due to its usefulness. Depending on the applicable purpose, it has been applied in many sectors; such as military, industrial, automotive, medical, art, food, etc. 3D printing is the process of making three-dimensional objects from a digital source into real physical products. The three most common types of 3D printer are extrusion type, granular type, and light polymerised type. Flexible varieties of material those can be used for 3D printing are ranging from thermoplastics, rubber, silicone, metal, thermoplastic powders to photopolymers. The scope of this thesis covers 3D printing with extrusion type and the results from implementing many different infill pattern strategies. 3D printer with extrusion type creates an object by slicing it into many stacked horizontal layers and uses infill to provide structural integrity by filling the internal section of an object in particular pattern. Proposed results were based upon qualitative research method combining simulation, mechatronic integration, and experimental verification to investigate how the different shapes of pattern and infill densities in the internal structure would affect the strength of the model. The result will offer additional knowledge for design engineer on selecting infill pattern to achieve optimum mechanical properties.