Torsional vibration characteristics and experimental study of cracked rotor system with torsional oscillation

Nonlinear vibration signatures for localized fault of rolling element bearing in rotor-bearing-casing system

Deep transfer network with joint distribution adaptation: A new intelligent fault diagnosis framework for industry application

A novel adversarial learning framework in deep convolutional neural network for intelligent diagnosis of mechanical faults

Vibration propagation identification of rotor-bearing-casing system using spatiotemporal graphical modeling

Casing vibration response prediction of dual-rotor-blade-casing system with blade-casing rubbing

Learning transferable features in deep convolutional neural networks for diagnosing unseen machine conditions

Fault diagnosis of wind turbine based on Long Short-Term memory networks

An adaptive spatiotemporal feature learning approach for fault diagnosis in complex systems

Intelligent fault diagnosis method for rotating machinery via dictionary learning and sparse representation-based classification

Vibration response characteristics of a dual-rotor with unbalance-misalignment coupling faults: Theoretical analysis and experimental study

Dynamic response of steam seal rubbing in steam turbine considering thermal effect

Comparison of random forest, artificial neural networks and support vector machine for intelligent diagnosis of rotating machinery

Influence Analysis of Nonlinear Stress–Strain Behavior in Pulverizing Wheel of Fan Mill

Intelligent Diagnosis Method for Rotating Machinery Using Dictionary Learning and Singular Value Decomposition

Dynamics of Slant Cracked Rotor for a Steam Turbine Generator System

An Improved Rigid Multibody Model for the Dynamic Analysis of the Planetary Gearbox in a Wind Turbine

This paper proposes an improved rigid multibody model for the dynamic analysis of the planetary gearbox in a wind turbine. The improvements mainly include choosing the inertia frame as the reference frame of the carrier, the ring, and the sun and adding a new degree of freedom for each planet. An element assembly method is introduced to build the model, and a time-varying mesh stiffness model is presented. A planetary gear study case is employed to verify the validity of the improved model. Comparisons between the improvement model and the traditional model show that the natural characteristics are very close; the improved model can obtain the right equivalent moment of inertia of the planetary gear in the transient simulation, and all the rotation speeds satisfy the transmission relationships well; harmonic resonance and resonance modulation phenomena can be found in their vibration signals. The improved model is applied in a multistage gearbox dynamics analysis to reveal the prospects of the model. Modal analysis and transient analysis with and without time-varying mesh stiffness considered are conducted. The rotation speeds from the transient analysis are consistent with the theory, and resonance modulation can be found in the vibration signals.

Fault Analysis and Optimal Balancing of Bowing of Steam Turbine Rotor Under Long-Term Service

Wind Turbine Fault Diagnosis System Based on A Fuzzy Expert System

Bearing fault diagnosis of wind turbine based on intrinsic time-scale decomposition frequency spectrum

Global geometric similarity scheme for feature selection in fault diagnosis

Crack cause analysis of pulverizing wheel in fan mill of 600MW steam turbine unit

Coupled Torsional Vibration and Fatigue Damage of Turbine Generator Due to Grid Disturbance

Study of Snubbing Mechanism Using Finite Element Method

Crack modeling of rotating blades with cracked hexahedral finite element method

Design of distributed energy system based on artificial neural network approach

Identification of Multi-Concurrent Fault in a Steam Turbine Rotor System Using Model-Based Method

Experimental Study on Lateral and Torsional Vibration of Cracked Rotor With Torsional Excitation

Transient Dynamics Analysis on Main Shaft of Wind Turbine

Application of Fuzzy-Rough Set theory and improved SMO algorithm in aircraft engine vibration fault diagnosis

Torsional vibration and fatigue evaluation in repairing the worn shafting of the steam turbine

Application of the ensemble empirical mode decomposition and Hilbert transform to pedestal looseness study of direct-drive wind turbine

Crack Growth Prediction of the Steam Turbine Generator Shaft

Machine Condition Classification Using Deterioration Feature Extraction and Anomaly Determination

Application of the intrinsic time-scale decomposition method to fault diagnosis of wind turbine bearing

Condition classification and tendency prediction for prognostics using feature extraction and reconstruction

Application of back propagation neural network to fault diagnosis of direct-drive wind turbine

Correlation Analysis of Oil Temperature Trend for Wind Turbine Gearbox

Vibration characteristics on a wind turbine rotor using modal and harmonic analysis of FEM

Experimental investigation and analysis for gearbox fault

Fatigue Damage Evaluation of Turbine Generator Due to Multi-Mode Subsynchronous Oscillation

Modal analysis of wind turbine tower

Torsional Vibration Analysis and Stress Calculation for the Fault 600MW Steam Turbine Generator Shaft System

Application of RBF and Elman Neural Networks on Condition Prediction in CBM

The Influence of Wind Characteristic on Aeroelastic Stability for Wind Turbine Blades

Test system of a small wind turbine under laboratory conditions

Research on fault mechanism of icing of wind turbine blades

Study on modeling and simulation of non-grid-connected wind turbine

The study of aeroelastic stability for wind turbine blades

Theoretical and experimental study on wind wheel unbalance for a wind turbine

Comparison of Data Mining and Neural Network Methods on Aero-engine Vibration Fault Diagnosis

Modeling the Late Quaternary Indian Ocean Circulation

A Quantitative Assessment of the Arabian Sea Sediment Record Using GCM Simulated Upwelling

Abstract A general circulation model (GCM) of the ocean is used to study the effects of changes in the monsoon winds of present day and 9000 yr B.P. on the upwelling in the Arabian Sea. The vertical transport from the ocean GCM is used as a measure of upwelling strength to assess the relative abundance of Globigerina bulloides at present and 9000 yr B.P., during the climatic optimum. The high abundance of G. bulloides at 9000 yr B.P. is probably a result of a doubling of the vertical transport at that time.