An Experimental Investigation of Effects of Misalignment of Shaft of AC Motor Using Vibration Analysis

Abstract

Any defect in machine will affect vibration behavior & nature of this effect is different for different faults.
Understanding & practicing the fundamentals of rotating shaft parameters is the first step in reducing unnecessary
vibrations, reducing maintenance cost & increasing machine uptime. Hence vibration measurements can be used to
identify those defects qualitatively. Vibration signals give early indication of mechanical failures such as misalignment,
unbalance & bent shaft etc. The present study deals with experimental investigation of misalignment with the help of
FFT analyzer & its unique vibration spectrum for different coupling stiffness & for Varying load condition.