Acoustic Emission for the Detection of Shaft-to-Seal Rubbing in Large Power Generation Turbines
An empirical investigation is undertaken in order to assess the potential of the AE technique for the detection of seal-to-rotor rubbing in steam turbines. Rubbing was induced at various axial locations along a 4 ½ tonne test rotor, rotating at 3000 rpm and supported by 7” (178mm) journal bearings. This paper examines the capabilities of bearing mounted AE transducers for the detection of seal-to-rotor rubbing.
R. Pullin, K.M. Holford, S.L. Evans and J.M. Dulieu-Barton
M. J. Leahy et al., "Acoustic Emission for the Detection of Shaft-to-Seal Rubbing in Large Power Generation Turbines", Advanced Materials Research, Vols. 13-14, pp. 433-438, 2006