Results 21 to 30 of about 9,116 (296)

Error Analysis of Heterodyne Interferometry Based on One Single-Mode Polarization-Maintaining Fiber

Sensors, 2023
Using polarization-maintaining fiber (PMF) in dual-frequency heterodyne interferometry has the advantages of reducing the laser’s own drift, obtaining high-quality light spots, and improving thermal stability.
Yibin Qian, Jiakun Li, Qibo Feng, Qixin He, Fei Long   +4 more
doaj   +1 more source

DFIG current and controller signals’ angular shaft misalignment signature’ an experimental case study [PDF]

, 2020
with the continuous increase in wind turbine generator size the monitoring and diagnosis of drive train shaft misalignment is of growing importance, as this condition contributes to as much as 30% of turbine's downtime. Machine current signature analysis
Wang, Yingzhao, Nur Sarma, Mohammed, A., Sinisa Djurovic, Djurovic, S., Sarma, Nur, Sarma, N., Djurovic, Sinisa, Yingzhao Wang, Mohammed, Anees, Wang, Y., Durovic, Sinisa; id_orcid, Anees Mohammed   +12 more
core   +1 more source

Transfer Alignment Configuration Based on Angular Velocity and Angular Velocity Integral Applied to Marine Vehicles [PDF]

AUT Journal of Modeling and Simulation, 2022
Transfer alignment of master and slave systems plays a key role in the inertial navigation accuracy of the marine cooperative vehicles. Accuracy enhancement of misalignment angle and orientation estimation is the main purpose of the transfer alignment ...
Mostafa Amuei, Seyyed Mohammad Mehdi Dehghan, Hossien Nourmohammadi, Mohammad Ali AlirezaPouri   +3 more
doaj   +1 more source

Fatigue life prediction of cylindrical roller bearings subjected to different operating conditions [PDF]

MATEC Web of Conferences
In rotary and mechanical systems, the fatigue life of bearings is a critical factor to consider if unplanned shutdown is to be prevented. Often, the inner and outer rings of bearings are non-concentric, and this mostly results in axial or angular ...
Mashiyane Themba, Tartibu Lagouge, Desai Dawood, Salifu Smith   +3 more
doaj   +1 more source

Evaluating the effects of detector angular misalignments on simulated computed tomography data [PDF]

Precision Engineering, 2016
Abstract The quality of dimensional measurements made by industrial X-ray computed tomography (CT) depends on a variety of influence factors in the measurement process. In this paper, the effects of angular misalignments of a flat-panel detector are investigated. First, a forward projection model is applied to evaluate distortions of the radiographic
Ferrucci, Massimiliano, Ametova, Evelina, CARMIGNATO, SIMONE, Dewulf, Wim   +3 more
openaire   +1 more source

Modeling the Splice Loss of Single-Mode Optical Fibers Affected by Altitude

IEEE Access, 2019
Splicing loss of optical fibers has always been the focus of attention in engineering. With the construction of communication networks in high altitude areas, more attention has been paid to the fusion of optical fibers in high altitude areas.
Ziru Cui, Chaowei Yuan, Kehang Xu, Yong Sun, Shan Yin   +4 more
doaj   +1 more source

Numerical analysis of load capacity and strength of rigid flanged shaft couplings

Nihon Kikai Gakkai ronbunshu, 2014
Rigid flanged shaft couplings are commonly used to connect two shafts that transmit large torque. A pair of flanges is clamped by multiple reamer bolts since they are subjected to large shear force.
Toshimichi FUKUOKA, Masataka NOMURA, Koichi OKAYAMA   +2 more
doaj   +1 more source

Wind Turbine Generator Controller Signals Supervised Machine Learning for Shaft Misalignment Fault Detection: A Doubly Fed Induction Generator Practical Case Study

Energies, 2021
With a continued strong increase in wind generator applications, the condition monitoring of wind turbine systems has become ever more important in ensuring the availability and reduced cost of produced power.
Ahmed Al-Ajmi, Yingzhao Wang, Siniša Djurović   +2 more
doaj   +1 more source

A comparative study of misalignment detection using a novel Wireless Sensor with conventional Wired Sensors

, 2012
The advancement in low cost and low power MEMS sensors makes it possible to develop a cost-effective wireless accelerometer for condition monitoring. Especially, the MEMS accelerometer can be mounted directly on a rotating shaft, which has the potential ...
Gu, Fengshou, Ball, Andrew, Arebi, L., Gu, F., Ball, A., Arebi, Lufti   +5 more
core   +1 more source

Effect of machine scatter on the rotating bending fatigue life of materials

Journal of the Mechanical Behavior of Materials, 2018
Rotating bending fatigue test results vary from specimen to specimen even if materials are tested in a standard laboratory set up because rotating bending fatigue life or fatigue strength depends upon various factors due to its dynamic action. One method
Banavasi Shashidhar M., Ravishankar K.S., Naik Padmayya S.   +2 more
doaj   +1 more source