Performance Comparison among Vibration Based Indicators in Damage Identification of Structures

Abstract:

A simple and robust methodology is presented to identify damages in a structure using changes in vibration data. A comparison is made among damage indicators such as natural frequencies, mode shape data, curvature damage factors and flexibility matrices to study their efficacy in damage assessment. Continuous ant colony optimization (ACO_R) technique is used to solve the inverse problem related to damage identification. The outcome of the simulated results demonstrates that the flexibility matrix as a damage indicator provides better damage identification.

• Periodical: Applied Mechanics and Materials (Volumes 592-594)
• Pages: 2081-2085
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.592-594.2081
• Online since: July 2014
• Authors: Bharadwaj Nanda*, Aditi Majumdar, Damodar Maity, Dipak K. Maiti
• Keywords: Ant Colony Optimization, Comparative Study, Curvature Damage Factor, Damage Identification, Flexibility Matrix, Inverse Problem, Vibration Data

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