Online structural damage detection using first order eigen perturbation techniques

Abstract

The use of statistical data driven techniques such as principal component analysis PCA has shown considerable potential in the area of vibration based structural damage detection The objective of PCA based methods is to obtain proper orthogonal modes using recorded acceleration data that is subsequently utilized to detect the change in the dynamic behavior of the vibrating system from its pristine state to contiguous linear non linear states indicating damage Several PCA based methods util