Results 1 to 10 of about 22,928 (311)

Simulation and experiment of ECM accuracy of cooling holes considering the influence of temperature field

open access: yesCase Studies in Thermal Engineering, 2022
Electrochemical machining (ECM) is an essential method for machining gas film cooling holes in high-temperature resistant nickel-based alloys. However it is difficult to directly measure the temperature of the machining area of the cooling hole during ...
Zhaolong Li   +4 more
doaj   +1 more source

Productivity Enhancement of Aircraft Turbine Disk Using a Two-Step Strategy Based on Tool-Path Planning and NC-Code Optimization

open access: yesMetals, 2022
Most of the parts of an aircraft require the use of lightweight and high-strength materials. Since aircraft parts mainly use mechanical cutting processes, which are the most suitable material removal mechanism, to minimize changes in material properties,
Wan-Sik Woo   +5 more
doaj   +1 more source

A comparative analysis of milling strategies of complex geometry surfaces [PDF]

open access: yesFME Transactions, 2022
This paper analyses the influence of machining strategies and cutting parameters on the milling of aluminium complex geometry parts. In the first experimental phase, parts were machined with a combination of two roughing strategies and three finishing ...
Globocki-Lakić Gordana   +3 more
doaj   +1 more source

Hole making characteristics of novel domestic T800 carbon fiber reinforced composite

open access: yesJournal of Aeronautical Materials, 2023
In view of the defects of the new domestic T800 carbon fiber reinforced plastic (CFRP), such as lamellar tearing and fiber loss, which would be easily caused by large drilling force and torque during cutting, an experimental platform including a vertical
DONG Huimin   +6 more
doaj   +1 more source

Study on Dynamic Uncertainty and Sensitivity of Gear System Considering the Influence of Machining Accuracy

open access: yesApplied Sciences, 2023
Due to the limitation of machining accuracy, the transmission performance uncertainty of mass gears must be evaluated quantitatively to provide the basis for its application in the whole machine.
Fang Guo, Chen Li, Jinzhan Su, Chao Liu
doaj   +1 more source

Study on Kerosene-submerged Jet Electrochemical Machining and Optimization of the Electrochemical Machining Parameters

open access: yesInternational Journal of Electrochemical Science, 2021
Kerosene-submerged jet electrochemical machining (Jet-ECM) has been proven to be an effective process to enhance the machining localization of Jet-ECM.
Xinchao Li   +7 more
doaj   +1 more source

The Accuracy of Tide-predicting Machines [PDF]

open access: yesNature, 1922
IT seemed to me that Mr. Marmer's first letter left the impression that the U.S.A. machine is one that is free from serious errors of the order of magnitude of those of the British machines, and I raised the question of proof. I said that I should be very glad to know that this machine could produce hourly heights to within 0.05 ft. with a spring range
  +6 more sources

Deep Reactive Ion Etching of Z-Cut Alpha Quartz for MEMS Resonant Devices Fabrication

open access: yesMicromachines, 2020
Quartz is widely used in microelectromechanical systems (MEMS). Especially, MEMS quartz resonators are applied to sensors and serve as sensitive elements. The capability of deep etching is a limitation for the application.
Bo Li   +4 more
doaj   +1 more source

A Unique Model to Estimate Geometric Deviations in Drilling and Milling Due to Two Uncertainty Sources

open access: yesApplied Sciences, 2021
Industry 4.0 involves the use of information and communication technologies to transform industry by intelligent networking machines and processes. The availability of big data sets from manufacturing and inspection allow for developing new and more ...
Wilma Polini, Andrea Corrado
doaj   +1 more source

Effects of a Magnetic Field on the Machining Accuracy for the Electrochemical Drilling of Micro Holes

open access: yesInternational Journal of Electrochemical Science, 2020
Micro electrochemical machining (micro-ECM) is a promising machining technology for microparts of difficult-to-cut metallic materials and has been used in the industries of aeronautics and astronautics, ordnance, precision devices, and so on.
Changfu Zhang   +5 more
doaj   +1 more source

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