Influence of Ultrasonic Assistance on Delamination During Machining of CFRP Composite
Many nowadays researches are focused on decreasing the weight of components and increasing their strength, or obtaining unique properties. One of the results of the researches are composite materials. However, different material properties of matrix and reinforcing material cause certain problems during conventional machining, such as rapid tool wear and delamination of composite. Therefore, other researches start focusing on machinability of this kind of materials. Scientists have discovered several ways of how to satisfactorily machine composite materials. Seco Tools Company starts developing a new design of the tools. Researchers of the Stanford University have devised a diamond-like carbon (DLC) coating available to effectively cut matrix as well as reinforce fibers. DMG Mori Company has implemented ultrasonic assistance into machining process and reached enhanced machinability. This article compares conventional milling and ultrasonic assisted milling of the carbon fiber reinforced polymer (CFRP) composite material by a special designed cutting tool. The results could be applied to determine when ultrasonic assistance is advantageous and what advantages it brings about.
KeywordsUltrasonic assisted machining CFRP Composite Delamination
This contribution is a part of the GA VEGA project of the Ministry of Education, Science, Research and Sport of the Slovak Republic, No. 1/0477/14 “Research of influence of selected characteristics of machining process on achieved quality of machined surface and problem free assembly using high technologies”.
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