Preface; Contents; 1 Structural Health Monitoring of Aero-Engines in Non-stationary Operations; Abstract; 1 Introduction; 2 Theoretical Basis; 2.1 Stationary Versus Non-stationary Processes; 2.2 Measurement Signals; 2.3 Signal Analysis; 3 Condition Monitoring of Aircraft; 3.1 The Classical Approach; 3.2 The Advisory and Expert Approach; 3.3 Tip Timing Method; 4 Conclusions; References; A New Approach to Tune the Vold-Kalman Estimator for Order Tracking; 1 Introduction; 2 The Vold-Kalman Estimator; 2.1 The Measurement Equation; 2.2 The State Equation; 3 The Tuning of the Vold-Kalman Estimator

4 Numerical Example5 Conclusion; References; 3 Estimation of Cyclic Cumulants of Machinery Vibration Signals in Non-stationary Operation; Abstract; 1 Introduction; 2 Problem Formulation; 2.1 Cyclostationarity; 2.2 Pure Versus Impure Second Order Cyclostationarity; 2.3 Spectral Coherence; 3 Proposed Method; 3.1 Biquad Filters; 3.2 Extraction of the First Order Cyclostationary Component; 3.3 Extension to Variable Speed Operation; 4 Application to Real Life Signals; 5 Conclusion; Acknowledgements; References

4 Simplified Dynamic Model of a Wind Turbine Shaft Line Operating in Non-stationary Conditions Applied to the Analysis of IAS as a Machinery Surveillance ToolAbstract; 1 Introduction; 2 General Modelling Elements; 2.1 General Approach; 2.2 The Roller Bearing Model; 2.3 Modelling the Gear Coupling; 2.4 Model Assembly and Resolution; 3 Simplified Wind Turbine Model Description; 4 Test of the Model and Results; 5 Conclusion; Acknowledgements; References; 5 Current Signal Analysis of an Induction Machine with a Defective Rolling Bearing; Abstract; 1 Introduction

2 Electro-Magnetic-Mechanical Modeling3 Results and Discussion; 4 Conclusion; Acknowledgements; References; 6 Fault Detection in Gears Using Stochastic Resonance; Abstract; 1 Introduction; 2 Brief Description and Application of Stochastic Resonance; 2.1 Numerical Simulations and Analyses; 2.2 Experimental Results and Analyses; 3 Applying Stochastic Resonance to Residual Signals; 4 Applying Stochastic Resonance to High-Pass Filtered Signals; 5 Conclusions; References; 7 The Impact Estimation of Damping Foundations in Dynamics of the Rotor System in Non-stationary States; Abstract

1 Introduction2 Object and Methodology of Researches; 3 Diagnostics Methodology; 4 Results of Researches and Comments; 5 Conclusion; References; Journal Article; Book; Knife Diagnostics with Clustering Techniques and Support Vector Machines; 1 Introduction; 2 Experimental Setup; 3 Data Analysis; 3.1 Time Domain Parameters; 3.2 Frequency Domain Parameters; 4 Clustering Analysis; 5 Classification by SVM; 6 Conclusions; References; 9 Stable Distributions and Fractal Diagnostic Models of Vibration Signals of Rotating Systems; Abstract; 1 Introduction