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Spectrum-Based, Full-Band Preprocessing, and Two-Dimensional Separation of Bearing and Gear Compound Faults Diagnosis

IEEE Transactions on Instrumentation and Measurement, 2021
Compound faults diagnosis of bearings and gears in gearboxes is a full-challenging task. The rational usage of meshing resonance is probable to be one of the breakthroughs to solve this problem. However, the existing detection method of meshing resonance
Lingli Cui   +3 more
semanticscholar   +1 more source

Structure and polytypic faults in Ba4NdMn3O12 compound

Journal of Materials Science, 2008
We have studied the structure and polytypic defect formation in the 12R perovskite-type Ba4NdMn3O12 compound. Its structure was characterized using transmission electron microscopy (TEM). Like in the 12R ordered oxides of Ba4CeMn3O12 and Ba4PrMn3O12 (Fuentes et al., J. Solid State Chem.
H. Yang   +6 more
openaire   +1 more source

Compound faults feature extraction of inter-shaft bearing based on vibration signal of whole aero-engine

Journal of Vibration and Control, 2021
To effectively extract the information of compound faults of inter-shaft bearing of an aero-engine based on casing vibration signals, the paper has introduced the concept of weighted Katz fractal dimension and proposed the method combining information ...
Mingyue Yu   +3 more
semanticscholar   +1 more source

Stacking-fault energy of II–VI compounds

Philosophical Magazine A, 1985
Abstract Stacking-fault energies on the {111} plane in ZnTe (zinc blende structure) and on the (0001) plane in ZnO (wurtzite structure) have been estimated to be 16 ± 4 and greater than 43 mJ m−2, respectively, by weak-beam electron microscopy of dislocations. The stacking-fault energies of the above crystals and previously obtained ones of other II-VI
S. Takeuchi   +3 more
openaire   +1 more source

Adapted dictionary-free orthogonal matching pursuit and 0-1 programming to solve the isolation and diagnosis of bearing and gear compound faults

, 2021
In the fault diagnosis of bearings, the high flexibility of the asymmetric Gaussian chirplet model enables the adapted dictionary-free orthogonal matching pursuit to manifest good performance. Since this method does not rely on predetermined dictionaries,
Lingli Cui   +3 more
semanticscholar   +1 more source

Vibration mechanism analysis for cylindrical roller bearings with single/multi defects and compound faults

, 2020
The generation of defects has a great influence on the vibration characteristic of roller bearings. Thus, it is very important to analyze the vibration mechanism of bearings with different kinds of defects by dynamic models which can make systematic ...
Hongrui Cao   +3 more
semanticscholar   +1 more source

A Novel Compound Neural Network for Fault Diagnosis

2006 2nd IEEE/ASME International Conference on Mechatronics and Embedded Systems and Applications, 2006
Independent Component Analysis (ICA) is a powerful tool for redundancy reduction and nongaussian data analysis. And, Artificial Neural Network (ANN), especially the Self-Organizing Map (SOM) based on unsupervised learning is a kind of excellent method for pattern clustering and recognition. By combining ICA with ANN, we proposed a novel compound neural
Jiao Weidong, Yang Shixi, Yan Gongbiao
openaire   +1 more source

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