Damage detection methods using vibration modes are investigated on ring structures and modal behavior of the slightly asymmetric rings are examined. Mode shapes changes, MSER(modal strain energy ratio) and MCR(modal curvature ratio) are applied to ide...
Damage detection methods using vibration modes are investigated on ring structures and modal behavior of the slightly asymmetric rings are examined. Mode shapes changes, MSER(modal strain energy ratio) and MCR(modal curvature ratio) are applied to identify the locations of faults or damages. Parameters are calculated and compared by finite element analysis on rings with designed local damages. Damages are modeled as reduced stiffness in the analysis. The results show MSER and MCR can be proper factors to detect local damages in ring structures.