Analytical verification of applicability of higher order derivatives of modal parameters for damage prediction in concrete beam structure under different crack lengths

Abstract

Any engineering structure under various loading and support conditions may damage fully or partially with single or multiple damage locations. Such damage causes reduction in stiffness of member which in turn leads to shortening of serviceability life or safety of a structure. Hence, it is certainly become important to predict the location of damage in structure before assessing the intensity of damage severity. Therefore, in this present research paper damage location in a concrete beam structure was predicted using computational modal analysis (i.e., Mode shapes, Mode shape curvatures and Curvature Damage factor and higher order derivatives)and verified the applicability of higher order modal parameters in determining damage location with required consistency under varying crack lengths.