Results 261 to 270 of about 4,524,731 (322)

Multiple Enhanced Sparse Decomposition for Gearbox Compound Fault Diagnosis

IEEE Transactions on Instrumentation and Measurement, 2020
The vibration monitoring of gearboxes is an effective means of ensuring the long-term safe operation of rotating machinery. A gearbox may have more than one fault in actual applications. Therefore, gearbox compound fault diagnosis should be investigated.
Ning Li, Weiguo Huang, Wenjun Guo, Guanqi Gao, Zhongkui Zhu   +4 more
openaire   +1 more source

Compound fault diagnosis based on probability box theory

2017 9th International Conference on Modelling, Identification and Control (ICMIC), 2017
In view of compound fault of rolling bearing in mechanical transmission system, the fault signal was decomposed by probability box modeling method to obtain the different probability box models. The original data with abundant statistical information was taken as the research object.
Tang Hong, Du Yi, Ding Jiaman, Liu Liqiang   +3 more
openaire   +1 more source

MAACCN: An Intelligent Decoupling Diagnosis Method for Compound Faults in Electrohydrostatic Actuators

IEEE Transactions on Instrumentation and Measurement
Electrohydrostatic actuators (EHAs), as complex integrated systems of mechanical, electrical, and hydraulic components, play a crucial role in aerospace and other fields.
Yuanhao Hu, Yibo Song, Xiansong He, Xiaoli Zhao, Xiaowei Yang, Jianyong Yao, Zhaoqiang Wang, Hong Pei, Changhua Hu   +8 more
semanticscholar   +1 more source

Research on compound faults identification of aeroengine inter-shaft bearing based on CCF–Complexity–VMD–SVD

Structural Health Monitoring, 2022
Inter-shaft bearing is an important component of dual-rotor aeroengine and it is difficult to extract fault characteristics and identify a fault type.
Minghe Fang, Mingyue Yu, Guihong Guo, Zhigang Feng   +3 more
semanticscholar   +1 more source

Tunable Catalytic Alloying Eliminates Stacking Faults in Compound Semiconductor Nanowires

Nano Letters, 2012
Planar defects in compound (III-V and II-VI) semiconductor nanowires (NWs), such as twin and stacking faults, are universally formed during the catalytic NW growth, and they detrimentally act as static disorders against coherent electron transport and light emissions.
Heo, H, Kang, K, Lee, D, Jin, LH, Back, HJ, Hwang, I, Kim, M, Lee, HS, Lee, BJ, Yi, GC, Cho, YH, Jo, MH   +11 more
openaire   +3 more sources

Generalized Vold–Kalman Filtering for Nonstationary Compound Faults Feature Extraction of Bearing and Gear

IEEE Transactions on Instrumentation and Measurement, 2020
Effective detection of multifaults in bearings and gears is a challenging issue in rotary machinery health monitoring. As such, a generalized Vold–Kalman filtering (GVKF)-based compound faults diagnosis method is presented in this paper.
Dezun Zhao, Wei-dong Cheng, R. Gao, Ruqiang Yan, Peng Wang   +4 more
semanticscholar   +1 more source

Planar faults in Aurivillius compounds: An X-ray diffraction study

Philosophical Magazine A, 2002
Abstract Layered bismuth-containing perovskites are known to be subject to complex structural imperfections such as planar faults. A careful analysis of X-ray powder diffraction lines of the Aurivillius compound SrBi2Nb2O9 shows that stacking faults are located along the c axis and (hk0) reflections are thus unaffected by faulting.
A. Boulle, C. Legrand, R. Guinebretiè, J. P. Mercurio, A. Dauger   +4 more
openaire   +1 more source

The LFIgram: A Targeted Method of Optimal Demodulation Band Selection for Compound Faults Diagnosis of Rolling Bearing

IEEE Sensors Journal
As the main part of industrial rotating machinery, rolling bearings play an important role in improving the efficiency of mechanical equipment. Due to the influence of the complicated working environment, the single fault is easy to develop into the ...
Huibin Wang, Changfeng Yan, Yaofeng Liu, Shen Li, Jiadong Meng   +4 more
semanticscholar   +1 more source

Stacking fault energy and ionicity of cubic III–V compounds

Physica Status Solidi (a), 1978
Using weak beam electron microscopy the stacking fault energy (SFE) of III-V compounds is determined by measuring the dissociation width of edge dislocations. The SFE corrected for the lattice parameters is given in meV/atom for GaAs, GaP, GaSb, InAs, InP, and InSb. As expected there is a strong correlation of the SFE with the ionicity of the bond. The
H . Gottschalk, G. Patzeb, H. Alexander
openaire   +1 more source

A systematic review of diagnosis methods for rolling bearing compound faults: research status, challenges, and future prospects

Measurement science and technology
Rolling bearing compound faults (RBCFs), which are one of the primary causes for unscheduled downtime of rotating machinery, are characterized by randomness, sequentiality, coupling, and concealment.
Shen Li, Huibin Wang, Changfeng Yan, Yunfeng Hou, Lixiao Wu   +4 more
semanticscholar   +1 more source