Assessment of “change in flexibility method” in structural health monitoring systems
Wahalathantri, Buddhi Lankananda, Thambiratnam, David, Chan, Tommy H.T., & Fawzia, Sabrina (2009) Assessment of “change in flexibility method” in structural health monitoring systems. In Proceedings of the 3rd Smart Systems Postgraduate Student Conference, Queensland University of Technology, Queensland University of Technology, Brisbane, QLD, pp. 120-125.
The modern structural diagnosis process is rely on vibration characteristics to assess safer serviceability level of the structure. This paper examines the potential of change in flexibility method to use in damage detection process and two main practical constraints associated with it. The first constraint addressed in this paper is reduction in number of data acquisition points due to limited number of sensors. Results conclude that accuracy of the change in flexibility method is influenced by the number of data acquisition points/sensor locations in real structures. Secondly, the effect of higher modes on damage detection process has been studied. This addresses the difficulty of extracting higher order modal data with available sensors. Four damage indices have been presented to identify their potential of damage detection with respect to different locations and severity of damage. A simply supported beam with two degrees of freedom at each node is considered only for a single damage cases throughout the paper.
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|Item Type:||Conference Paper|
|Keywords:||Change in Flexibility Method, Damage Detection, Damage Indicies|
|Divisions:||Current > Schools > School of Civil Engineering & Built Environment|
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Copyright Owner:||Copyright 2009 [please consult the author]|
|Deposited On:||09 Aug 2012 09:30|
|Last Modified:||25 Sep 2012 23:50|
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