Paper Title :Damage Detection Of Beam-Like Structures Using Modal Data

Author :Chinnu Susan Shaji, D Tensing, T Sundararajan

Article Citation :Chinnu Susan Shaji ,D Tensing ,T Sundararajan , (2015 ) " Damage Detection Of Beam-Like Structures Using Modal Data " , International Journal of Advances in Mechanical and Civil Engineering (IJAMCE) , pp. 55-61, Volume-2, Issue-3

Abstract : Damage in any structure alters the dynamic characteristics of the entire system. The changes can be characterized by the changes in the modal parameters, namely modal frequencies, mode shapes and modal damping values. The modal parameters are the functions of physical properties of the structure such as mass, damping and stiffness. The presence of crack influences the vibration response as well as dynamic properties of the system. Damage Detection based on vibration has gained a lot of interest in engineering research field in order to find out the damage identification, estimating the damage location and extend of damage severity. The basic essential part of vibration based damage detection is the changes in structural properties such as stiffness and damping. The changes in the stiffness of the structure are associated with the decrease in the natural frequencies as well as in the modification of the modes of vibration of the system. This property can be used as damage indicators. Detecting the structural damages in its early stages can help the maintenance and repair works to extend the life time of the system and reduce the life-cycle costs. This paper describes the different methods for the damage detection based on modal data and its validation in field of engineering. Keywords- Cantilever Beam, Curvature Mode Shapes, Curvature Damage Factor, Damage Identification, Free-Free beam, Mode Shapes, Structural Health Monitoring

Type : Research paper

Published : Volume-2, Issue-3

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