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Title: An experimental study on the machining characteristics in ductile-mode milling of BK-7 glass
Authors: Arif, M.
Rahman, M. 
San, W.Y. 
Keywords: Ductile-mode machining
Peripheral milling
Ultraprecision machining
Issue Date: May-2012
Citation: Arif, M., Rahman, M., San, W.Y. (2012-05). An experimental study on the machining characteristics in ductile-mode milling of BK-7 glass. International Journal of Advanced Manufacturing Technology 60 (5-8) : 487-495. ScholarBank@NUS Repository.
Abstract: Glass is considered as one of the most challenging materials to machine because of its high hardness coupled with high brittleness. The challenge, in machining such a brittle material, lies in achieving the material removal through plastic deformation rather than characteristic brittle fracture. It has already been established that every brittle material, no matter how brittle it is, can be machined in ductile mode under certain critical conditions. The critical conditions are material specific, and hence, every material tends to show unique behavior in terms of critical conditions during machining process. This paper outlines the results of an experimental study to determine the critical chip thickness for ductile-brittle transition, chip morphology, and the effect of cutting speed on the critical conditions in peripheral milling process of BK-7 glass. It is established experimentally that the cutting speed affects the chip morphology, machined surface quality, and critical conditions due to possible thermal effects in such a way that ductile-brittle transition phenomenon is facilitated at high cutting speeds. © 2011 Springer-Verlag.
Source Title: International Journal of Advanced Manufacturing Technology
ISSN: 02683768
DOI: 10.1007/s00170-011-3626-6
Appears in Collections:Staff Publications

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