Results 21 to 30 of about 307,069 (265)

Prediction method of cutting stability of roadheader based on the Newton–Lagrange mixed discrete method

open access: yesScientific Reports, 2022
In order to study the influence of the multiple interaction of coal and rock and the velocity effect of the cutting head on the flutter stability of the cantilever roadheader, considering the physical characteristics of coal and rock, the structural ...
Yun Zhu, Miao Xie, He Wang
doaj   +1 more source

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

DIAGNOSTICS OF ENGINEERING CUTTING SYSTEM USING CUTTING FORCE PARAMETERS

open access: yesBulletin of Bryansk state technical university, 2020
The purpose of this work: the engineering process optimization of 09H17N7Yu steel turning at the expense of creating the procedure allowing the diagnostics of an engineering cutting system state on the results of cutting force control, inverse problem solution, that is, cutting force control according to the analysis results of system state diagnostics,
Anna Morozova, Bori Mokrickiy
openaire   +2 more sources

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

Adaptive intelligent cutting technology of the shearer based on the high-precision three-dimensional dynamic geological model

open access: yes矿业科学学报, 2023
If the shearer is cutting coal using the "memory cutting" technique, a manual demonstration is required.The memory cutting technology has higher requirements on the reserving conditions of coal seams.When the coal seam fluctuates greatly, frequent manual
Hou Yunbing   +5 more
doaj   +1 more source

Measurement of Cutting Temperature in Interrupted Machining Using Optical Spectrometry

open access: yesSensors, 2023
This research presents an experimental study focused on measuring temperature at the tool flank during the up-milling process at high cutting speed. The proposed system deals with emissivity compensation through a two-photodetector system and during ...
Isaí Espinoza-Torres   +6 more
doaj   +1 more source

Evaluation of a Novel Controlled Cutting Fluid Impinging Supply System When Machining Titanium Alloys

open access: yesApplied Sciences, 2017
Following a comprehensive review on titanium machining and methods of cutting fluid application, this paper presents a new Controlled cutting fluid impinging supply system (Cut‐list) developed to deliver an accurate amount of cutting fluid into the ...
Salah Gariani   +3 more
doaj   +1 more source

Nonlinear Dynamic Analysis of the Cutting Process of a Nonextensible Composite Boring Bar

open access: yesShock and Vibration, 2020
A nonlinear dynamic analysis of the cutting process of a nonextensible composite cutting bar is presented. The cutting bar is simplified as a cantilever with plane bending.
Bole Ma, Yongsheng Ren
doaj   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

open access: yesFEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Hexapod robot motion planning investigation under the influence of multi-dimensional terrain features

open access: yesFrontiers in Neurorobotics
To address the challenges arising from the coupled interactions between multi-dimensional terrain features—encompassing both geometric and physical properties of complex field environments—and the locomotion stability of hexapod robots, this paper ...
Chen Chen   +9 more
doaj   +1 more source

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