Abstract
This research is about improvement of damage diagnostic accuracy of SI-F method under high noise condition. The SI-F method is statistical damage diagnostic method which diagnose existence of the damage from detecting the change of correlation between sensors as instead of change of single sensor measurement. Since the damage diagnosis is conducted by using parameter which shows change of correlation, this method has high tolerance to the noise and change of environments. However, deviation from a theoretical result occurs in the status under too high noise condition. Then in this paper, the noise condition evaluation parameter for SI-F method was proposed and the method for improvement of diagnostic accuracy using the parameter was confirmed.
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