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.

Impact and interest:

Search Google Scholar™

Citation counts are sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

Full-text downloads:

154 since deposited on 08 Aug 2012
6 in the past twelve months

Full-text downloads displays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.

ID Code: 53019
Item Type: Conference Paper
Refereed: No
Keywords: Change in Flexibility Method, Damage Detection, Damage Indicies
ISBN: 9780980582727
Divisions: Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2009 [please consult the author]
Deposited On: 08 Aug 2012 23:30
Last Modified: 21 Jul 2017 04:44

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page