Study on AM with multiple materials and its Mechanical properties testing method

• Main Authors: Cheng-FangSung, 宋承芳
• Other Authors: Ru-Min Chao
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/5k38zq

碩士 === 國立成功大學 === 系統及船舶機電工程學系 === 106 === 3D printing has been widely used in various fields in recent years. It is a kind of industrial robot. The finished product is simple and refined, and there are also considerable breakthroughs in materials, from plastic materials to metal materials or special metal materials. In order to respond to the trend of metal materials and the development of gradient functional materials in recent years, it is necessary to edit the manufacturing code (G-Code) to meet the application requirements in the existing laminated manufacturing method, and to detect the micro-quality and macroscopic mechanical properties after manufacturing. Establish the foundation of quality control. The purpose of this study is to establish a Directed Energy Deposition basic control system and metal printing related manufacturing code based on the two-color Fused Deposition Modeling technology. Two-color printing simulates the lamination of two metal blends. The remote feed line and linear module servo control are added to the machine. The two-color extrusion control system and the manufacturing code are edited. The design of the dual nozzles can be printed differently. Toned products, printed gradient functional materials according to height or angle change, color mixing objects, flat coating, axisymmetric material coating function, can be generated by the color mixing ratio, diameter of the tube and length of the G-Code, and Printed two-color products are realized in FDM laminates. In addition, for the testing of mechanical properties, a test method of micro fatigue testing machine is proposed. In the future, fatigue testing results of gradient functional materials can be provided to establish a reference for quality control adjustment. Faraday's experiments principle is used to generate fatigue stress in the machine. Basically, the control module outputs the PWM signal, the current output direction changes continuously to generate magnetism, and the fatigue experiment is performed. In the program aspect, the analog signal output from the laser sensor is received by myDAQ, and the myDAQ is input to the labview program for access and calculation. And reciprocate the relationship between the RMS value and the logarithm of the period.