Ultrasonically assisted drilling of rocks
conference contributionposted on 17.07.2018, 08:18 by N.V. Mikhailova, P.Y. Onawumi, Anish Roy, Vadim Silberschmidt
Conventional drilling of rocks can generate significant damage in the drilled material; a material layer is often split off a back surface of a sample during drilling, negatively affecting its strength. To improve finish quality, ultrasonically assisted drilling (UAD) was employed in two rocks - sandstone and marble. Damage areas in both materials were reduced in UAD when compared to conventional drilling. Reductions in a thrust force and a torque reduction were observed only for UAD in marble; ultrasonic assistance in sandstone drilling did not result in improvements in this regard.
This research was supported by the FP7 IRSES project TAMER IRSES-GA-2013-610547.
- Mechanical, Electrical and Manufacturing Engineering