Molecular dynamics modelling of brittle-ductile cutting mode transition : case study on silicon carbide [PDF]
The mechanism of brittle-ductile cutting mode transition has received much attention over the past two decades. Due to the difficulties in directly observing the cutting zone during the brittle-ductile cutting mode transition by experimental techniques ...
Zhang, GQ, Xiao, GB, To, S
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An Experimental Study on Mechanical Modeling of Ceramics Based on Microstructure [PDF]
The actual grinding result of ceramics has not been well predicted by the present mechanical models. No allowance is made for direct effects of materials microstructure and almost all the mechanical models were obtained based on crystalline ceramics.
Jian-Jun Liu +5 more
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Shoulder damage model and its application for single point diamond machining of ZnSe crystal [PDF]
The damaging of ZnSe crystal has a significant impact on its service performance and life. Based on the specific cutting energies for brittle and ductile mode machining, a model is proposed to evaluate the damage depth in the shoulder region of ZnSe ...
Liang, R. +9 more
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Experimental Investigation on Cutting Characteristics in Nanometric Plunge-Cutting of BK7 and Fused Silica Glasses [PDF]
Ductile cutting are most widely used in fabricating high-quality optical glass components to achieve crack-free surfaces. For ultra-precision machining of brittle glass materials, critical undeformed chip thickness (CUCT) commonly plays a pivotal role in
Qinglong An, Weiwei Ming, Ming Chen
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Experimental Study on the Ultraprecision Ductile Machinability of Single-Crystal Germanium [PDF]
Single-crystal germanium is an important infrared optical material. In the present work, single-point diamond turning experiments on single-crystal germanium (100), (110) and(111) planes were conducted in order to examine their ultraprecision machining ...
Kouki MAEKAWA +7 more
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Identification of factors that dominate size effect in micro machining [PDF]
In micro-machining the so called "size effect" is identified as critical in defining process performance. Size effects refers to the phenomenon whereby the reduction of the undeformed chip thickness to levels below the cutting edge radius, or gain size ...
N. Driver +5 more
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Crystallographic effects in micro/nanomachining of single-crystal calcium fluoride [PDF]
Single-crystal calcium fluoride (CaF_2) is an excellent optical material in the infrared range and the ultraviolet range. It is an indispensable substrate material for the 193 and 157 nm wavelength laser optics for future large-scale semiconductor ...
Syoji, Katsuo +5 more
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Analysis of Friction and Burr Formation in Slot Milling [PDF]
Burr formation is one of the most common and undesirable phenomenon occurring in machining operations that reduces assembly and machined part quality, and it should be avoided or at least reduced.
Niknam, Seyed Ali, Songmene, Victor
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Experiment of milling process, which is an unsteady cutting process with varying undeformed chip thickness, is carried out by using annealed and rolled aluminium, copper and 7 : 3 brass as work material.
M. Oguri, H. Fujii, H. Mori, T. Ota
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Modeling of Dynamic Instability Via Segmented Cutting Coefficients and Chatter Onset Detection in High-Speed Micromilling of Ti6Al4V [PDF]
Miniature components with complex shape can be created by micromilling with excellent form and finish. However, for difficult-to-machine materials, such as Ti-alloys, failure of low-flexural stiffness microtools is a big limitation.
SINGH, KK, SINGH, R, KARTIK, V
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