Results 61 to 70 of about 944,594 (140)

Analysis on Thermal-hydraulic Characteristics of Lead-bismuth Reactor System LESMOR under Vehicle-mounted Motion

open access: yesYuanzineng kexue jishu, 2023
The construction of small modular reactor design is mostly for commercial power generation, and there are certain limitations in maneuverability and flexibility.
LU Dingsheng;WEI Shiying;WANG Chenglong;TIAN Wenxi;SU Guanghui;QIU Suizheng
doaj  

An Improved VMD With Empirical Mode Decomposition and Its Application in Incipient Fault Detection of Rolling Bearing

open access: yesIEEE Access, 2018
Transient impulse analysis is an effective way to detect the bearing fault at its early stage. However, it is hard to precisely extract these so-called transient impulses because these collected vibration signals usually are non-stationary, nonlinear ...
Fan Jiang, Zhencai Zhu, Wei Li
doaj   +1 more source

Fault Detection of Gearbox from Inverter Signals Using Advanced Signal Processing Techniques [PDF]

open access: yes, 2012
The gear faults are time-localized transient events so time-frequency analysis techniques (such as the Short-Time Fourier Transform, Wavelet Transform, motor current signature analysis) are widely used to deal with non-stationary and nonlinear signals ...
Gu, Fengshou   +7 more
core   +1 more source

Comparative Study of Time-Frequency Decomposition Techniques for Fault Detection in Induction Motors Using Vibration Analysis during Startup Transient

open access: yesShock and Vibration, 2015
Induction motors are critical components for most industries and the condition monitoring has become necessary to detect faults. There are several techniques for fault diagnosis of induction motors and analyzing the startup transient vibration signals is
Paulo Antonio Delgado-Arredondo   +6 more
doaj   +1 more source

CLUNK PHENOMENA ANALYSIS OF AUTOMOBILE TRANSMISSION SYSTEM BASED ON TORQUE ABRUPT CONDITION

open access: yesJixie qiangdu, 2020
Through the analysis of the transmission mechanism of the vehicle transmission system,the torsional vibration model of the 12-DOF multi-gap nonlinear powertrain system was established,and the transient shock response characteristics under various working
ZHANG ZhiGang   +3 more
doaj  

Analysis of the Hydropower Unit Vibration Signal in the Start Transient Process Based on VMD-HHT Method

open access: yes工程科学与技术, 2017
:With the increase of hydropower units and installed capacity in China,the fault problem during the transient process occurs frequently.The signal analysis method is widely used to deal with the problem.The variational mode decomposition (VMD) method,a ...
YANG Hua   +3 more
doaj  

Driveline Torsional Analysis and Clutch Damper Optimization for Reducing Gear Rattle

open access: yesShock and Vibration, 2016
This paper describes a research work on driveline modeling, torsional vibration analysis, and clutch damper parameters optimization for reducing transmission gear rattle on the vehicle creeping condition.
Huwei Wu, Guangqiang Wu
doaj   +1 more source

A METHOD EXTRACTING TRANSIENT SIGNAL OF ROLLING BEARING BASED ON AUDITORY MODEL AND PROBABILITY OF EXTREME POINTS

open access: yesJixie qiangdu, 2018
One of the most important characteristics of rolling bearing fault is that the fault components will induce the shock response of vibration. Aiming at the modulation characteristics of roller bearing fault vibration signals and the complex of traditional
WANG Bo   +4 more
doaj  

Transient Vibration Loads Characteristics Analysis of Variable Speed Rotor

open access: yesApplied Sciences
To investigate the rotor vibration loads during the variable speed transient process, a transient rotor aeroelastic method based on the medium beam deformation theory and Hamilton’s principle is developed to simulate the rotor transient dynamic loads in ...
Zhihao Yu   +3 more
doaj   +1 more source

Transient vibrations of reinforced concrete beams

open access: yesÉpítés - Építészettudomány, 2012
A repedesek megjelenese jelentős mertekben befolyasolja a vasbeton gerendak dinamikai viselkedeset. Ha rezges kozben a repedesek kvaziperiodikusan megnyilnak es zarodnak, akkor a repedezett zonaban a hajlitomerevseg időben valtozik, a rezges nemlinearis jelleget mutat meg akkor is, ha a feszultsegek az aranyossagi hataron belul vannak.
openaire   +1 more source

Home - About - Disclaimer - Privacy