Please use this identifier to cite or link to this item:
|Title:||Mechanics precision grinding brittle materials||Authors:||Ngoi, Bryan Kok Ann.||Keywords:||DRNTU::Engineering::Mechanical engineering::Mechanics and dynamics||Issue Date:||2000||Abstract:||This project aims at gaining a better understanding of the mechanics of precision grinding of brittle materials. Indentation and scribing experiments on brittle materials were carried out to study crack initiation and propagation, brittle-ductile transition and material removal mechanism. The results of indentation and scribing tests show that brittle materials can be machined in a ductile manner when penetration depth is less than a critical value. Single point diamond turning of brittle materials, both as an alternative machining technique in its own right and as a model for certain parameters involved in grinding, was performed. Experimental results show that the properties of the workpiece material have a considerable influence on the critical depth of cut. Mirror surfaces are more prone to be generated on single crystal silicon than glasses. A smooth surface with a roughness in nano-scale was produced on silicon by properly controlling machining parameters. Tool wear mechanism in diamond cutting of glasses was investigated.||URI:||http://hdl.handle.net/10356/6987||Rights:||Nanyang Technological University||Fulltext Permission:||restricted||Fulltext Availability:||With Fulltext|
|Appears in Collections:||MAE Research Reports (Staff & Graduate Students)|
Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.