Condition Monitoring of Machinery in Non-Stationary Operations: Proceedings of the Second International Conference "Condition Monitoring of Machinery in Non-Stationnary Operations" CMMNO’2012

Front Matter....Pages 1-12
Front Matter....Pages 1-1
Separation of Gear and Bearing Fault Signals from a Wind Turbine Transmission under Varying Speed and Load....Pages 3-12
Object and Operation Factor Oriented Diagnostics....Pages 13-23
Rényi Entropy Based Statistical Complexity Analysis for Gear Fault Prognostics under Variable Load....Pages 25-32
Non Linear Transient Response of a Flexible Shaft Controlled by Electro-rheological Hydrostatic Squeeze Film Dampers....Pages 33-40
STFT Based Approach for Ball Bearing Fault Detection in a Varying Speed Motor....Pages 41-50
Kurtosis over Energy Distribution Approach for STFT Enhancement in Ball Bearing Diagnostics....Pages 51-59
Detecting AE Signals from Natural Degradation of Slow Speed Rolling Element Bearings....Pages 61-68
Leak Detection in Viscoelastic Pipe by Transient Analysis....Pages 69-79
Gear Fault Detection under Fluctuating Operating Conditions by Means of Discrepancy Analysis....Pages 81-88
Bearing Fault Diagnosis Using Neural Network and Genetic Algorithms with the Trace Criterion....Pages 89-96
Front Matter....Pages 97-97
Using Parametric Dynamical Models to Determine Observability Requirements for Condition Monitoring Systems....Pages 99-107
Impedance Method for Modeling and Locating Leak with Cylindrical Geometry....Pages 109-123
Influence of the Acyclism on the Dynamics of a Spur Gear System....Pages 125-132
Model Based Investigation on a Two Stages Gearbox Dynamics under Non-stationary Operations....Pages 133-142
Rotor Speed Identification Using Two Nonlinear Observers for Induction Motor Drive....Pages 143-150
Gear Transmission Dynamics Supported by Bearings Including Tooth Profile Deviations....Pages 151-158
Effects of Gyroscopic Coupling on the Dynamics of a Wind Turbine Blade with Horizontal Axis....Pages 159-174
Eccentricity Incidence on the Nonlinear Behavior of a Helical Gear....Pages 175-182
A Maintenance Alarm for Alternators Based on Eigensolutions....Pages 183-192
Multi-objective Discrete Rotor Design Optimization....Pages 193-200
Front Matter....Pages 97-97
A Critical Speed Optimization of Rail Vehicle System Based on Safety Criterion....Pages 201-211
Dynamic Behavior of an Aerodynamics Turbine Coupled to a Multiplier Helical Three-Stage Gear....Pages 213-220
Front Matter....Pages 221-221
Gearbox Fault Diagnosis Using Time-Wavelet Energy Spectral Analysis....Pages 223-230
Numerical Investigations on the Magnitude of Disturbance That Could Be Detected through IAS Monitoring....Pages 231-238
Time-Frequency Analysis Techniques Review and Their Application on Roller Bearings Prognostics....Pages 239-246
Reconstruction of Sound Sources of Gear Transmission Mechanism by Planar Near Field Acoustical Holography....Pages 247-255
Application of Empirical Mode Decomposition for Impulsive Signal Extraction to Detect Bearing Damage – Industrial Case Study....Pages 257-266
On the Use of Fourier-Bessel Series Expansion for Gear Diagnostics....Pages 267-275
Genetic Optimization of Decision Tree Choice for Fault Diagnosis in an Industrial Ventilator....Pages 277-283
Combining RBF-PCA-ReliefF Filter for a Better Diagnosis Performance in Rotating Machines....Pages 285-292
Acoustical Holography for Non-Stationary Sources Using Orthogonal-Like Fractional Octave Band Filters....Pages 293-300
Application of Schur Filtering for Local Damage Detection in Gearboxes....Pages 301-308
Feature Selection for Diesel Engine Fault Classification....Pages 309-318
Gears and Bearings Combined Faults Detection Using Hilbert Transform and Wavelet Multiresolution Analysis....Pages 319-328
Artificial Immune System for Condition Monitoring Based on Euclidean Distance Minimization....Pages 329-337
Conditioning of a Spectral Indicator for the Detection of Rotor Faults of an Induction Motor by Using the TSA Method....Pages 339-346
Numerical Tool for Extraction of Modal Parameters Based on Continuous Wavelet Transform....Pages 347-355
Integrated Modulation Intensity Distribution as a Practical Tool for Condition Monitoring – Part 1: Theoretical Investigation....Pages 357-364
Integrated Modulation Intensity Distribution as a Practical Tool for Condition Monitoring – Part 2: Case Study of the Wind Turbine....Pages 365-373
A Non-zero Padding Method in the Angle Domain to Improve the Order Spectrum Resolution of Computed Order Tracking....Pages 375-383
Front Matter....Pages 221-221
Fractal Based Signal Processing for Fault Detection in Ball-Bearings....Pages 385-392
Front Matter....Pages 393-393
The Role of Condition Based Maintenance for Industrial Equipment and Cancer Screening....Pages 395-401
Integration of Production Data in CM for Non-stationary Machinery: A Data Fusion Approach....Pages 403-414
Instantaneous Angular Speed Monitoring of a 2MW Wind Turbine Using a Parametrization Process....Pages 415-423
Application of Spectral Kurtosis to Acoustic Emission Signatures from Bearings....Pages 425-437
Diagnosing of Rotor Systems of Marine Gas Turbine Engines in Nonstationary States....Pages 439-450
Robust Fragmentation of Vibration Signals for Comparative Analysis in Signal Validation....Pages 451-460
Application of Vibration Monitoring for Mining Machinery in Varying Operational Conditions....Pages 461-469
Application of Time Descriptors to the Modified Hilbert Transform of Empirical Mode Decomposition for Early Detection of Gear Defects....Pages 471-479
State Space Modeling Theory of Induction Motors for Sensorless Control and Motoring Purposes....Pages 481-496
Some Remarks on Using Condition Monitoring for Spatially Distributed Mechanical System Belt Conveyor Network in Underground Mine – A Case Study....Pages 497-507
Statistical Data Processing for Wind Turbine Generator Bearing Diagnostics....Pages 509-518
Front Matter....Pages 519-519
Seeded Damage Detection on Self-aligning Ball Bearings with Acoustic Emission....Pages 521-526
Effect of Uncertainties in Default Detection through the Wave Finite Elements....Pages 527-534
Centralized and Decentralized Adaptive FTC of Interconnected and Networked Control System....Pages 535-545
Variable Drive Frequency Effect on Spindle Dynamic Behavior in High Speed Machining....Pages 547-554
Experimental Non-obstructive Particles Damping Approach for Passive Vibration....Pages 555-563
The Application of a First-Principle Damper Model for Tracking the Variation of Eigenvalues under Non-stationary Road Excitation....Pages 565-572
Adjustment of a Feedwater Heater Model in Bi-stationary Load Conditions....Pages 573-580
Iterative Method for the Remote Identification of Impact Forces at Multiple Clearance Supports Using Few Vibratory Measurements....Pages 581-588
Front Matter....Pages 519-519
Robust Optimization of Gear Tooth Modifications Using a Genetic Algorithm....Pages 589-597
Parametric Study on Energy Pumping of Mdof System Using Multiple Dynamic Absorbers....Pages 599-605
Chatter Recognition in Band Sawing Based on Feature Extraction and Discriminant Analysis....Pages 607-615
Damping in Bolted Structures....Pages 617-626
Dynamic Analysis of an Offshore Wind Turbine Drivetrain on a Floating Support....Pages 627-634
Back Matter....Pages 0--1