Thesis-2007-Ahmed.pdf (7.11 MB)
3D finite element modelling of ultrasonically assisted turning of high-strength alloy
thesis
posted on 2018-10-09, 14:57 authored by Naseer AhmedUltrasonically assisted turning (UAT) is a novel machining technique, where high-frequency
vibration is superimposed on the movement of a cutting tool. This
technique allows significant improvements in processing intractable materials. This
thesis reports research into the development of a coupled thermomechanical 3D finite
element model of UAT.
In the case of UAT high-frequency vibrations are introduced in the cutting tool and
it is important to use techniques capable of recording this fast movement of the
cutting tool and its impact on both the workpiece and cutting tool. High speed (HS)
filming is performed to study the chip formation, development of different shear
zones and the material's response to different vibrations. Nanoindentation studies are
performed to get an insight into the development of a hardness zone near the
machined surface in the workpiece. [Continues.]
History
School
- Mechanical, Electrical and Manufacturing Engineering
Publisher
© N. AhmedPublisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2007Notes
A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.Language
- en