November 2010

Prediction of stress concentration effect under thermal and dynamic loads in a high pressure turbine rotor

  Geometric discontinuities cause a large variation of stress and produce a significant increase in stress. The high stress due to the variation of geometry is called as ‘stress concentration’. This will increase when the loads are further applied. There are many investigators who studied the stress distribution around the notches, grooves, and other irregularities of various machine...

Author(s):   R. Nagendra Babu, K. V. Ramana and K. Mallikarjuna Rao        

November 2010

Vehicle gearbox fault diagnosis using noise measurements

  Noise measurement is one of the technologies for health monitoring and diagnosis of rotating machines such as gearboxes. Although, significant research has been undertaken in understanding the potential of noise measurement in monitoring gearboxes, this has been solely applied on any types of gears (spur, helical, etc.). The condition monitoring of a lab-scale, single stage, gearbox, represents the real...

Author(s):   Sameh M. Metwalley, Nabil Hammad and Shawki A. Abouel-seoud