Results 31 to 40 of about 351,760 (158)

Vibration Isolation and Alignment of Multiple Platforms on a Non-Rigid Supporting Structure

open access: yesActuators, 2020
In many applications comprised of multiple platforms with stringent vibration isolation requirements, several vibration isolators are employed to work in tandem. They usually must accomplish two objectives: (i) reduce the vibration level of each platform;
Jorge Pérez-Aracil   +3 more
doaj   +1 more source

A two-step vibration-sound signal fusion method for weak fault feature detection in rolling bearing systems

open access: yesAdvances in Mechanical Engineering, 2021
The vibration and sound signals get widely applications in fault diagnosis of rolling bearing systems, but the detection accuracy is unstable at different measuring positions.
Guanchen Wu   +4 more
doaj   +1 more source

Research Status and Prospect of Torsional Vibration Detection Methods for Rotating Machinery

open access: yesJournal of Harbin University of Science and Technology, 2021
Torsional vibration of rotating machinery is one of the main factors affecting the reliability and service life of rotaing machinery. In recent years, the number of large units accidents caused by torsional vibration is increasing.
GUO Yan-ling, QIU Feng, LI Zhi-peng
doaj   +1 more source

Detection of Vibration Signal by Plane Scanning Utilizing Wavefront Sensors

open access: yesPhotonics
Laser remote sensing of seismic waves is extensively utilized in earthquake monitoring and resource exploitation. This article leverages wavefront sensors’ high resolution and array detection capabilities to effectively conduct planar scanning of target ...
Yun Pan   +5 more
doaj   +1 more source

Dynamics Simulation Analysis of Tooth Root Crack Fault of Planetary Gearbox based on Torsional Vibration Signal

open access: yesJixie chuandong, 2021
The vibration-based methods have been widely used in the tooth root crack fault diagnosis of planetary gearbox. Compared with traditional transverse vibration signal,torsional vibration signal is not affected by the modulation of time-varying ...
Wei Wei, Yunpeng Li, Yanshuai Yang
doaj  

Spectrum analysis of partial failure of shearer rocker gear based on vibration model

open access: yesGong-kuang zidonghua, 2016
A partial failure vibration signal model of spur gear was established starting from gear drive mechanism and considering both amplitude modulation and frequency modulation effects of meshing vibration due to partial spur gear damage.
DUAN Jiaolong   +6 more
doaj   +1 more source

Secured Credit and Bankruptcy: A Call for the Federalization of Personal Property Security Law [PDF]

open access: yes, 1987
In recent years, the need for systems monitoring the current in ation pressure in pneumatic tires has grown dramatically. One way to monitor the in ation pressure is to use the fact that the tire reacts like a spring when excited from road roughness. The
Phillips, David M.
core   +2 more sources

Vibration signal identification of coal-rock cutting of shearer based on cepstral distance

open access: yesGong-kuang zidonghua, 2017
In order to solve problems that conventional time-frequency domain analysis methods were sensitive to noise and had poor adaptability of energy change in coal-rock interface identification based on vibration signal analysis, a vibration signal ...
ZHANG Qizhi, QIU Jinbo, ZHUANG Deyu
doaj   +1 more source

Fault diagnosis of planetary gearbox based on multi-information fusion and convolutional neural network

open access: yesGong-kuang zidonghua, 2022
The fault diagnosis method of planetary gearbox based on machine learning relies on the artificial selection of the eigenvectors. The quality of eigenvectors selection largely determines the accuracy of the diagnosis method.
SHI Zhiyuan, TENG Hu, MA Chi
doaj   +1 more source

Deep Learning-Based Denoising of Noisy Vibration Signals from Wavefront Sensors Using BiL-DCAE

open access: yesSensors
In geophysical exploration, laser remote sensing detection of seismic waves based on wavefront sensors can be used for geological detection and geophysical exploration.
Yun Pan   +7 more
doaj   +1 more source

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