Natural Vibration Frequency Definition Of Turbine Blades

Characterisation of Wireless Sensor Platforms for Vibration Monitoring of Wind Turbine Blades

Three different wireless sensor platforms and a wired accelerometer have been used to measure the acceleration response of a 2.5kW wind turbine blade subject to a uniaxial white noise excitation. The acquired data has been analysed using Fast Fourier Transform (FFT) analysis and the resonant frequency of the blade has been determined by each hardware platform. The results show excellent perform...

Toward Intelligent Fault Detection in Turbine Blades: Variational Vibration Models of Damaged Pinned-Pinned Beams

Inaccuracies in the modeling assumptions about the distributional characteristics of the monitored signatures have been shown to cause frequent false positives in vehicle monitoring systems for high-risk aerospace applications. To enable the development of robust fault detection methods, this work explores the deterministic as well as variational characteristics of failure signatures. Specifica...

Vibration and Crack Detection in Gas Turbine Engine Compressor Blades using Eddy Current Sensors

High cycle fatigue (HCF) cracks generated by compressor blade vibrations are a common source of failure in gas turbine engines. Current methods for crack detection are costly, time consuming, and prone to errors. In-situ blade vibration detection would help operators avoid critical engine speeds, and help infer the presence of cracks via a change in the mode of a blade. Blade vibrations can be ...

Optimum Shape Design of Turbine Blades?

Evaluation of Turbine Blades Using Computed Tomography

Turbine blades are high value castings having complex internal geometry. Computed Tomography has been employed on Turbine blades for finding out defects and internal details. The wall thickness, rib thickness and radius of curvature are measured from the CT slices. The discontinuities including blockages of cooling passages in the cast material can be detected. 3D visualization of the turbine b...