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February/March 2008 Articles
Vibration
All Cracked Up Examining the Vibrational Effects of a Cracked Shaft
by Dr. Zhuang Li & Dr. Suri Ganeriwala
A shaft crack is one of the
most common defects in a rotor system and early detection of this failure mode
is a very serious matter. In this study, shaft cracks were simulated and
analyzed using SpectraQuest’s rotor Machinery Fault Simulator (MFS). A series of
experiments were conducted to observe the behavioral changes of the cracked
shaft in critical speed, 1X and 2X frequency responses. The experimental results
were found to be consistent with the theoretical prediction of the shaft crack.
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