Results 11 to 20 of about 174,121 (317)

Classification of Aviation Alloys Using Laser-Induced Breakdown Spectroscopy Based on a WT-PSO-LSSVM Model

open access: yesChemosensors, 2022
It is well-known that aviation alloys of different grades show large differences in mechanical properties. At present, alloys must be strictly distinguished in the manufacturing plant because their close appearance and density are easily confused In this
Haorong Guo   +4 more
doaj   +1 more source

Chatter reliability prediction of side milling blisk

open access: yesXibei Gongye Daxue Xuebao, 2021
During the blisk side milling, the blade is thin and the tool suspension length is large, which is easy to occur milling system chatter. The wavy surface left by chatter has great effect on the surface roughness and service performance of the aero-engine

doaj   +1 more source

Milling Tool Wear Prediction Method Based on Deep Learning Under Variable Working Conditions

open access: yesIEEE Access, 2020
Tool wear prediction is essential to ensure part quality and machining efficiency. Tool wear is affected by factors such as the material, structure, process, and processing time of the parts.
Mingwei Wang   +4 more
doaj   +1 more source

Tool Wear Monitoring for Complex Part Milling Based on Deep Learning

open access: yesApplied Sciences, 2020
Tool wear monitoring is necessary for cost reduction and productivity improvement in the machining industry. Machine learning has been proven to be an effective means of tool wear monitoring.
Xiaodong Zhang   +3 more
doaj   +1 more source

Effects of Toolpath Parameters on Engagement Angle and Cutting Force in Ellipse-Based Trochoidal Milling of Titanium Alloy Ti-6Al-4V

open access: yesApplied Sciences, 2023
Trochoidal milling is an efficient strategy for the rough machining of difficult-to-cut materials. The true trochoidal toolpath has C2 continuity and avoids sharp changes in engagement angle and cutting load, resulting in smooth machine tool movement ...
Xu Zhou   +4 more
doaj   +1 more source

Energy Consumption Modeling for EDM Based on Material Removal Rate

open access: yesIEEE Access, 2020
In recent years, the energy problem has caused widespread concern in the manufacturing industry. The energy consumption in traditional turning and milling processes has been widely studied.
Mo Yang   +3 more
doaj   +1 more source

Research on the contact model between the polishing force and normal displacement in the flexible polishing using ABFW

open access: yesXibei Gongye Daxue Xuebao, 2022
抛光力是影响百页轮柔性抛光表面质量和效率的关键参数, 而百页轮和工件的法向位移是影响抛光力的直接因素, 因此建立二者的关系模型十分重要和必要。根据百页轮结构特性建立了其表面磨粒分布函数; 基于弹塑性接触理论得到单颗磨粒作用时抛光力和工件变形量的表达式, 并根据百页轮表面磨粒分布函数建立了抛光力和法向位移的关系模型; 通过仿真和实验对所建立关系模型进行验证。结果表明: 该关系模型可较好地体现柔性抛光过程中抛光力和法向位移的对应关系。
ZHANG Junfeng   +3 more
doaj   +1 more source

Feasibility and tool performance of ultrasonic vibration-assisted milling-grinding SiCf/SiC ceramic matrix composite

open access: yesJournal of Materials Research and Technology, 2022
As an advanced material, ceramic matrix composites have attracted attention due to their superior properties, such as low density, high strength, and high-temperature resistance.
Yi-feng Xiong   +4 more
doaj   +1 more source

Engineering high-performance database engines [PDF]

open access: yesProceedings of the VLDB Endowment, 2014
Developing a database engine is both challenging and rewarding. Database engines are very complex software artifacts that have to scale to large data sizes and large hardware configurations, and developing such systems usually means choosing between different trade-offs at various points of development.
openaire   +1 more source

Study on surface integrity of DD5 nickel-based single crystal super-alloy in creep-feed grinding

open access: yesXibei Gongye Daxue Xuebao, 2022
In order to control the forming surface quality of signal crystal turbine blade tenon teeth in the creep feed grinding, the influence of the creep feed grinding parameters on the grinding surface integrity of DD5 nickel-based single crystal superalloy ...
JIN Qichao   +4 more
doaj   +1 more source

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