Effect Of Longitudinally Ultrasonic Assisted Milling On Surface Integrity of CFRP Composites

Please enable javascript in your browser.

Charkhian, Ali | 2023

89 Viewed

Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 56027 (08)
University: Sharif University of Technology
Department: Mechanical Engineering
Advisor(s): Akbari, Javad
Abstract:
Nowadays, processes with the ability to machine advanced materials are very much needed by industries. Therefore, compare of a rotary ultrasonic-assisted machining process with a conventional machining process is carried out in this study. In order to evaluate this process, the milling and drilling processes are conducted on the carbon fiber-reinforced polymer composite and titanium materials where cutting forces, surface roughness, and fiber pull-out are selected as critical factors for analysis. As a result, it is seen that rotary ultrasonic-assisted machining has a good performance in the milling and drilling of advanced materials. In particular, it is shown that fiber pull-out is eliminated when the ultrasonic tool is used in the milling of CFRP. In addition, surface roughness is reduced by about 15 %. Meanwhile, micro-texture can be generated on the surface of the titanium workpiece by using the harmonic movement of the end mill. Also, it is shown that fiber pull-out and pits are eliminated when the ultrasonic tool is used in the milling of CFRP. In addition, axial forces are reduced by about 7% in the drilling of CFRP
Keywords:
Rotary Ultrasonic Machining ; Ultrasonic-Vibration ; Milling ; Ultrasonic Assisted Deep Drilling ; Carbon Fiber Reinforced Plastic (CFRP) ; Fiber Composites ; Drilling

No TOC