Service life of glass workpieces: influence of the grinding parameters on the surface roughness and the fracture strength. (1st January 2014)

• Record Type: Journal Article
• Authors: Brient, Antoine; Brissot, Marc; Sangleboeuf, Jean-Christophe
• Is Part Of: International journal of machining and machinability of materials. Volume 15:Number 1/2(2014)
• Page Start: 54
• Page End: 70
• Publication Date: 2014-01-01
• Subjects: machining -- grinding -- glass -- roughness -- fracture -- service life -- design of experiments -- response surface methodology -- RSM; Machining -- Periodicals; Metals -- Machinability -- Periodicals; 671.35
• Languages: English
• ISSNs: 1748-5711

Abstract

Glass manufacturing brings challenging issues when it comes to optimising a material removal process with regards to the workpieces service life. Scratches, cracks and sub-surface damages (SSD) resulting of a roughing process could propagate and lead to workpieces fracture. This paper focuses on the optimisation of grinding parameters with regards to the surface finish in order to maximise the service life of a glass workpiece. A central composite design of experiments has been used to investigate the influence of feed rate, depth of cut, wheel speed and manufacturing strategy on the surface finish and on the fracture strength through a three-point flexural bend test. Relevancy of the roughness parameters is discussed and the authors propose to use the roughness parameters derived from the Abbott-Firestone curve R vk and the material ratio 100–Mr2 to characterise the surface finishes of the ground glass samples.