A 16 megawatt ethylene drive steam turbine built in 1973 experienced rub related startup vibration problems for many years. The turbine would lock into a rub as it accelerated through the rotor’s first critical speed causing ...

Commissioning and operating turbomachinery often create surprises especially with respect to vibration. Often not all the conditions are known under which these highly-efficient turbomachines have to operate. This case ...

Rotor blade, stator vane, and rotor disk or drum corrosion continues to be one of the leading causes of rotor failures in industrial axial flow air compressors, aero derivative turbine engines, and industrial gas turbines. ...

The practice of rejuvenating reheat treatments, with and without hot isostatic pressing (HIP), has been successful in restoring severely overaged gas turbine blade microstructure and alloy properties to a nearly “as-new” ...

Objective: To share with users of Turbomachinery the fact that High Speed Turbomachinery with components possessing Residual Magnetism produces high shaft voltages & high current, which can lead to severe problem like high ...