fault diagnosis of intershaft bearings using fusion

Society of Tribologists Lubrication Engineers 62nndd

2012-5-8Society of Tribologists Lubrication Engineers 62nd Annual Meeting of the Society of Tribologists and Lubrication Engineers 2007 TABLE OF CONTENTS Volume 1 Technical Papers Contents Gearbox Corrosion Prediction Via Oil Condition Sensing and Model Fusion 1 Carl Byington Ryan Brewer Sanket Amin Ted Meyer Vijit Nair James Hopkins

General Electric Company patents list (2017 archive

- General Electric Company patent applications (2017 archive) Modulator for a hybrid converter system The present disclosure is directed to a system and method for modulating a voltage output of a hybrid converter system having first and second set of si-based power electronic devices coupled to first and second voltage source respectively and a first set of sic-based power electronic

Fault Diagnosis of Motor Bearings Based on a One

Deep learning has been an important topic in fault diagnosis of motor bearings which can avoid the need for extensive domain expertise and cumbersome artificial feature extraction However existing neural networks have low fault recognition rates and low adaptability under variable load conditions In order to solve these problems we propose a one-dimensional fusion neural network (OFNN

General Electric Company patents list (2017 archive

- General Electric Company patent applications (2017 archive) Modulator for a hybrid converter system The present disclosure is directed to a system and method for modulating a voltage output of a hybrid converter system having first and second set of si-based power electronic devices coupled to first and second voltage source respectively and a first set of sic-based power electronic

General Electric Company patents list (2017 archive

- General Electric Company patent applications (2017 archive) Modulator for a hybrid converter system The present disclosure is directed to a system and method for modulating a voltage output of a hybrid converter system having first and second set of si-based power electronic devices coupled to first and second voltage source respectively and a first set of sic-based power electronic

The Jet Engine by Roll

shafts 158 bearings 159 164 2 5 fluid systems Air systems 168 bleed 170 elements 170 operating envelope 173 design challenge 173 integrity 173 monitoring 174 266 3 4 the future today 270 tomorrow 271 technologies 275 materials 275 compression 275 combustion 276 turbines 276 noise 277 more electric 277 Fuel systems 174

General Electric Company patents list (2017 archive

- General Electric Company patent applications (2017 archive) Modulator for a hybrid converter system The present disclosure is directed to a system and method for modulating a voltage output of a hybrid converter system having first and second set of si-based power electronic devices coupled to first and second voltage source respectively and a first set of sic-based power electronic

Reliable fault diagnosis of bearings with varying

2018-5-25Determining the optimal features that are invariant under changes in the rotational speed variations of rolling element bearings is a challenging task To address this issue this paper proposes an acoustic emission (AE) analysis-based bearing fault diagnosis invariant under fluctuations of rotational speeds using envelope spectrums (ES) and a convolutional neural network (CNN)

damper test rig: Topics by Science gov

Instability of an intershaft squeeze film damper in a two-spool rotor dynamics simulator NASA Technical Reports Server (NTRS) Alderson R G 1987-01-01 An instability associated with an intershaft squeeze film damper is described The squeeze film is located between the intershaft bearing outer race and the low-speed shaft of a five-bearing two-spool test rig

core ac uk

2020-5-3approximation of the Brownian motion using the known thermostatic oscillator J et al Fault diagnosis of intershaft bearings using fusion information exergy distance method Shock and Vibration 2018 (2018) No 7546128 doi: 10 1155/2018/7546128 Zhang L Xu J Liu J Information exergy-based method for structural damage

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2018-2-1The motionally induced back-emf in railgunsNASA Astrophysics Data System (ADS) Graneau Peter Thompson Donald S Morrill Susan L 1990-04-01 Relative motion between armature and rails in the railgun produces induced emf 's The Lorentz force formula correctly predicts the emf present in the armature but it fails to acknowledge the induction of further emf 's in the rails which are

The Jet Engine By Roll

shafts 158 bearings 159 164 2 5 fluid systems Assembly 221 module assembly 221 engine buikj 223 226 3 2 installations externals 230 civil 231 military 236 5tealth 237 test teds 238 energy and marine 238 fire 240 ice 241 reheat 243 W5TOL and vectoring 244

The Jet Engine By Roll

shafts 158 bearings 159 164 2 5 fluid systems Assembly 221 module assembly 221 engine buikj 223 226 3 2 installations externals 230 civil 231 military 236 5tealth 237 test teds 238 energy and marine 238 fire 240 ice 241 reheat 243 W5TOL and vectoring 244

Classification of Ball Bearing Faults Using Vibro

This paper presents the novel technique for fault diagnosis of bearing by fusion of two different sensors: Vibration based and acoustic emission-based sensor The diagnosis process involves the following steps: Data Acquisition and signal processing Feature extraction Classification of features High-level data fusion and Decision making Experiments are carried out upon test bearings with a

The Jet Engine by Roll

shafts 158 bearings 159 164 2 5 fluid systems Air systems 168 bleed 170 elements 170 operating envelope 173 design challenge 173 integrity 173 monitoring 174 266 3 4 the future today 270 tomorrow 271 technologies 275 materials 275 compression 275 combustion 276 turbines 276 noise 277 more electric 277 Fuel systems 174

Shaft mechanical engineering

Fault diagnosis of bent shaft in rotor bearing system SpringerLink Apr 4 2018 The distinction is made between angular radial and axial shaft mechanical resistance out of the bearing – and is set into rotation is taken up by the coupling and transmitted to the driven machine Engineering Smart

A classifier fusion system for bearing fault diagnosis

2013-12-11 Introduction Although the visual inspection of time- and frequency-domain features of measured signals is adequate for identifying machinery faults there is a need for a reliable fast and automated procedure of diagnosis (Samanta et al 2004) Due to the increasing demands for greater product quality and variability short product life-cycles reduced cost and global competition

The Jet Engine by Roll

shafts 158 bearings 159 164 2 5 fluid systems Air systems 168 bleed 170 elements 170 operating envelope 173 design challenge 173 integrity 173 monitoring 174 266 3 4 the future today 270 tomorrow 271 technologies 275 materials 275 compression 275 combustion 276 turbines 276 noise 277 more electric 277 Fuel systems 174

damper test rig: Topics by Science gov

Instability of an intershaft squeeze film damper in a two-spool rotor dynamics simulator NASA Technical Reports Server (NTRS) Alderson R G 1987-01-01 An instability associated with an intershaft squeeze film damper is described The squeeze film is located between the intershaft bearing outer race and the low-speed shaft of a five-bearing two-spool test rig

The Jet Engine by Roll

shafts 158 bearings 159 164 2 5 fluid systems Air systems 168 bleed 170 elements 170 operating envelope 173 design challenge 173 integrity 173 monitoring 174 266 3 4 the future today 270 tomorrow 271 technologies 275 materials 275 compression 275 combustion 276 turbines 276 noise 277 more electric 277 Fuel systems 174

Fault Diagnosis of Intershaft Bearings Using Fusion

For the fault diagnosis of intershaft bearings the fusion information exergy distance method (FIEDM) is proposed by fusing four information exergies such as singular spectrum exergy power spectrum exergy wavelet energy spectrum exergy and wavelet space spectrum exergy which are extracted from acoustic emission (AE) signals under multiple rotational speeds and multimeasuring points

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2018-2-1The motionally induced back-emf in railgunsNASA Astrophysics Data System (ADS) Graneau Peter Thompson Donald S Morrill Susan L 1990-04-01 Relative motion between armature and rails in the railgun produces induced emf 's The Lorentz force formula correctly predicts the emf present in the armature but it fails to acknowledge the induction of further emf 's in the rails which are

The Jet Engine By Roll

shafts 158 bearings 159 164 2 5 fluid systems Assembly 221 module assembly 221 engine buikj 223 226 3 2 installations externals 230 civil 231 military 236 5tealth 237 test teds 238 energy and marine 238 fire 240 ice 241 reheat 243 W5TOL and vectoring 244

Multisensor Feature Fusion for Bearing Fault Diagnosis

In order to improve the fault diagnosis reliability a new multisensor data fusion technique is proposed First time-domain and frequency-domain features are extracted from the different sensor signals and then these features are input into multiple two-layer sparse autoencoder (SAE) neural networks for feature fusion

damper test rig: Topics by Science gov

Instability of an intershaft squeeze film damper in a two-spool rotor dynamics simulator NASA Technical Reports Server (NTRS) Alderson R G 1987-01-01 An instability associated with an intershaft squeeze film damper is described The squeeze film is located between the intershaft bearing outer race and the low-speed shaft of a five-bearing two-spool test rig

Fault diagnostics of rolling bearings using feature

Fault diagnostics of rolling bearings using feature fusion based BP RBF and PNN neural networks Issue title: Proceedings from the 17th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2015) Guest RBF and PNN for rolling bearing fault diagnosis and compares their performance The preprocessed vibration signals of

The Jet Engine By Roll

shafts 158 bearings 159 164 2 5 fluid systems Assembly 221 module assembly 221 engine buikj 223 226 3 2 installations externals 230 civil 231 military 236 5tealth 237 test teds 238 energy and marine 238 fire 240 ice 241 reheat 243 W5TOL and vectoring 244