Nonlinear Dynamics of Rotating Machines with Faults

Nonlinear Dynamics of Rotating Machines with Faults

General Project Information

International Joint Project - 2009/R2 of the Royal Society (London, GB)
Project Reference : JP090343

Start Date: 2010-02-01

End Date: 2012-01-31
Duration: 24 months

Project Status: Execution

Budget: 11 800 GBP (LUT - 8 200 GBP)

Person responsible at the LUT:
Prof.Grzegorz LITAK

Project Description

A cracked rotor often produces a non-linear or parametrically excited response due to the breathing (opening and closing) of the creck. Exciting such a system with an external force will produce response frequencies at combinations of the rotor spin speed and the excitation frequency. This project will:

  • optimise the external excitation form and frequency to extract the maximum information from a machine,
  • apply model based parameter estimation techniques to identify crack location and severity,
  • investigate the application of wavelet analysis, multifractal analysis and recurrence plots to measured and simulated response data,
  • determine features that may be used in pratical and robust condition monitoring systems.


Professor Michael FRISWELL

School of Engineering - Swansea University

Singleton Park

Swansea SA2 8PP

United Kingdom