Abstract
This work aims to study the influence of cutting parameters (cutting speed, feed rate, cutting depth and tool cutting edge angle) regarding surface roughness and burr formation during the milling of a mixed structure comprised of titanium and carbon fiber (stack). The parameters were varied from maximum to minimum, just as the tool cutting edge angle of the insert, through a full factorial design with 32 trials. The analyses were performed by measuring the surface roughness and burr size along with metallographic analyses through optic microscopy and scanning electron microscopy. The results showed that the surface roughness was higher for carbon fiber and burr size was higher for titanium. There were a number of tests with delamination of the carbon fiber, and the best cutting parameters to minimize surface roughness and burr formation were tool cutting edge angle of 45º, a feed rate of 0.028 mm/tooth, cutting depth equal to 0.26 mm and cutting speed equal to 150 m/min.
Highlights
The aviation industry has possessed strong value over the world since it intensified the integration among civilizations when along the 20th century and in the early 21st century, a large demand for aircraft with higher performance and lesser weight occurred, which is predicted to last for the 20 years.[1]
The main goal of this work is to understand the behavior of the cutting parameters during milling of a titanium/carbon fiber stack, varying cutting speed, cutting depth, feed rate and working tool cutting edge angles, on the burr formation and surface roughness
This is justified by the huge differences between both materials, the titanium is a ductile material and the machinability of the carbon fiber has high hardness and abrasiveness, due to their brittle nature, the burr formation in these materials are very distinct
Summary
The aviation industry has possessed strong value over the world since it intensified the integration among civilizations when along the 20th century and in the early 21st century, a large demand for aircraft with higher performance and lesser weight occurred, which is predicted to last for the 20 years.[1]. The main benefit is fuel consumption reduction with the same capability for load transportation.[3] Titanium is introduced in regions requiring metallic parts and temperature resistance, such as the fuselage and parts of the motor. Both materials can be used together to form high performance structures such that they compensate for each other’s properties.[4] These structures are denominated stacks: two joined boards, a titanium one and a carbon fiber one. The advantages of this combination are galvanic corrosion reduction, higher specific strength and lower burr formation.[3]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
