07-10-2014, 04:15 PM
Abstracts: In any rotating machinery, when the frequency of the rotating element equals the natural frequency of transverse vibration, then that speed is called critical speed of the rotating element. The measurement of this critical speed and related whirling motion is one of the important problems to be addressed by design and maintenance engineers. The main approach of this work is to measure the critical whirling speed of the shafts. In experimental investigation, whirl forms and amplitudes of the shaft will try to record photographically and shaft speeds will record electronically and will be synchronize with the recording of the whirl forms. The numerical validation of these experimental results will also be done and compare this data with experimental result. The same approach will try for different parameters involving dimensional and material changes as well as different end conditions.