Results 261 to 270 of about 388,520 (305)

Ductile Mode Cutting of Tungsten Carbide

2019
Cutting experiments are carried out to evaluate the cutting performance of tungsten carbide under nanometer scale chip thickness using a 5-axis CNC machining centre with CBN tools. The cutting forces are measured using a three-component dynamometer. Machined workpiece surface topography, chip formation, and tool wear are examined using an OMIS and SEM.
Kui Liu, Hao Wang, Xinquan Zhang
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OPTIMIZATION OF CUTTING MODES AND OPTIMALITY CRITERIA

2023
The work considers the optimization model of the machining process. Optimi‐zation criteria and objective functions used in calculations are given. Keywords: optimization of cutting modes, optimization criteria, cutting modes, optimal parameters 
Bohdanov, Oleksandr, Zakharov, Oleksandr, Mohylchenko, Nikita   +2 more
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Ductile Mode Cutting of Calcium Fluoride

2019
Calcium fluoride is one of the favourite optical materials in the advanced optics applications owing to its superior optical transmission and mechanical properties. While micromachining techniques have evolved to enhance the production process for optical components, this chapter will focus on the fundamental aspects to achieve ductile mode machining ...
Kui Liu, Hao Wang, Xinquan Zhang
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Dual-mode half-cut dielectric resonator filters

2009 IEEE MTT-S International Microwave Symposium Digest, 2009
This paper shows that it is feasible to realize a quadruple-mode dielectric resonator. A half-cut of this resonator is then shown to support two modes. A new type of dual-mode dielectric resonator filters is introduced, using a cylindrical resonator cut in half along its axis. Center frequency control, intra/inter/input-coupling mechanisms, tuning, and
M. Memarian, R. R. Mansour
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Dual mode SC-cut crystal oscillator

Proceedings of the 2004 IEEE International Frequency Control Symposium and Exposition, 2004., 2005
The simultaneous dual mode oscillation circuit of the 5 MHz 3/sup rd/ overtone SC-cut crystal is designed using mode-selective linear phase crystal filters, for each C and B mode. The perturbable dual mode oscillation has been successfully eliminated over the temperature range from -20/spl deg/ C to +90/spl deg/ C.
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Ultrasonic Vibration Assisted Ductile Mode Cutting

2019
It has been well known that ultrasonic vibration assisted cutting (UVC) is able to improve the machining performance for various material removal processes. For machining of brittle material, UVC has also been proven useful in improving surface integrity and increasing tool life by significantly increasing critical undeformed chip thickness for ductile-
Kui Liu, Hao Wang, Xinquan Zhang
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Theoretical research temperature mode of cutting tool

Proceedings. The 8th Russian-Korean International Symposium on Science and Technology, 2004. KORUS 2004., 2005
The non-stationary task of distribution of heat in a plane of a cutter having the form of a rectangular in the size p/spl times/d, is solved, at various intensity of thermal streams formed in a zone of contact of a cutting wedge with a processable material.
V.D. Klopotov, V.P. Nesterenko, KP. Arefiev   +2 more
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Cut-off wavelength measurements for single-mode optical fibers

Applied Optics, 1979
A new technique has been proposed for direct measurement of the cut-off wavelength, at which the first higher-order mode disappears. It uses a change of a near-field pattern of a fiber, which is excited by a variable wavelength source. The cut-off wavelength can be measured with +/-5-nm accuracy.
Y, Murakami, A, Kawana, H, Tsuchiya
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Integrated optical isolator based on nonreciprocal-mode cut-off

Applied Optics, 1990
A concept of an integrated optical isolator is presented which uses the TM(0) mode propagating perpendicular to the in-plane magnetization of a planar magnetooptical waveguide. The cut-off thickness of the waveguide depends on the propagation direction.
H, Hemme, H, Dötsch, P, Hertel
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Determination of the radial width of cut and cutting modes in milling

International Journal of Machine Tools and Manufacture, 1995
Abstract This paper describes a method to calculate the variation in the radial width of cut which occurs when the centre of a milling cutter follows the toolpath segments generated by a postprocessor. This variation is approximated by a stepped curve, thus enabling the toolpath segment to be divided into subsections, the radial width remaining ...
S. Hinduja, Y.S. Ma, G. Barrow
openaire   +1 more source