Results 21 to 30 of about 730,971 (212)

A new approach of high speed cutting modelling: SPH method [PDF]

open access: yes, 2006
The purpose of this study is to introduce a new approach of high speed cutting numerical modelling. A lagrangian Smoothed Particle Hydrodynamics (SPH) based model is carried out using the Ls-Dyna software.
Espinosa, Christine   +3 more
core   +2 more sources

A predictive surface profile model for turning based on spectral analysis [PDF]

open access: yes, 2013
This article presents a predictive approach of surface topography based on the FFT analysis of surface profiles. From a set of experimental machining tests, the parameters investigated are: feed per revolution, insert nose radius, depth of cut and ...
COSTES, Jean-Philippe
core   +5 more sources

Ultrasonically Assisted Single Point Diamond Turning of Optical Mold of Tungsten Carbide

open access: yesMicromachines, 2018
To realize high efficiency, low/no damage and high precision machining of tungsten carbide used for lens mold, a high frequency ultrasonic vibration cutting system was developed at first.
Zhanjie Li   +4 more
doaj   +1 more source

Specific cutting energy consumption in a circular saw for eucalyptus stands WM01 and MN463 [PDF]

open access: yes, 2011
Modern technologies for continuous carbonization of Eucalyptus sp. require special care in wood cutting procedures. Choosing the right tool, cutting speeds and feed rates is important to manage time and energy consumption, both of which being critical ...
Gomes Gontijo, Thiago   +5 more
core   +2 more sources

Vibration Identification of Folded-MEMS Comb Drive Resonators

open access: yesMicromachines, 2018
Natural frequency and frequency response are two important indicators for the performances of resonant microelectromechanical systems (MEMS) devices.
Jianxin Han   +6 more
doaj   +1 more source

Experimental study of the brittle–ductile transition in hot cutting of SG iron specimens [PDF]

open access: yes, 2013
http://www.sciencedirect.com/science/article/pii/S0924013612002579The present paper investigates the brittle-ductile transition (BDT) of the primary shear zone during cutting of spheroidal graphite (SG) iron in the austenitization temperature range ...
EL MANSORI, Mohamed   +1 more
core   +6 more sources

Measurement of the Euler Angles of Wurtzitic ZnO by Raman Spectroscopy

open access: yesJournal of Spectroscopy, 2017
A Raman spectroscopy-based step-by-step measuring method of Euler angles φ,θ,and  ψ was presented for the wurtzitic crystal orientation on a microscopic scale.
Wu Liu, Qiu Li, Gang Jin, Wei Qiu
doaj   +1 more source

Qualitative Identification of the Static Pull-In and Fundamental Frequency of One-Electrode MEMS Resonators

open access: yesMicromachines, 2018
This paper attempts to qualitatively identify the static pull-in position, pull-in voltage, and fundamental frequency of one-electrode microresonators from a physical perspective. During theoretical derivation, a generalized one-degree-of-freedom (1-DOF)
Jianxin Han   +6 more
doaj   +1 more source

Laser cutting tobacco slice experiment: Effects of cutting power and cutting speed

open access: yesOpen Physics, 2022
Due to their low melting point, low strength, uneven thickness, and sugar and moisture content, tobacco slices are very sensitive to the requirements of cutting parameters.
Li Pengfei   +9 more
doaj   +1 more source

Investigation and Statistical Analysis for Optimizing Surface Roughness, Cutting Forces, Temperature, and Productivity in Turning Grey Cast Iron

open access: yesMetals, 2023
This paper investigated the influence of cutting parameters, including feed rate, cutting speed, tool nose radius, and wet or dry cutting conditions, on the resultant force, cutting edge/workpiece temperature, and surface roughness when turning grey cast
Magdy M. El Rayes   +5 more
doaj   +1 more source

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