Glass is a brittle material available in nature. The production of mechanically sound parts from brittle material such as glasses and ceramics, irrespective of the method of fabrication - i.e. fine grinding or microfinishing, hinges on the understanding of the mechanism of material removal at low depths of cut. Brittle material such as glasses and ceramics normally respond to the applied force during grinding by generation and propagation of cracks. Above a normal load, Pn stresses in the plastic zone will generate fracture damage in the form of lateral and median crack systems. Below the critical normal load microcracks formed may not propagate into bulk material. It is this microcrack-free material removal that is central to the production of mechanically sound parts in brittle materials.
| Number of Pages : | 11 |
| Published : | 11/01/1999 |
