Structural Health Monitoring of Buildings and Infrastructure

Authors: Mojtaba Valinejadshoubi, Ashutosh Bagchi, Osama Moselhi

Abstract:

Structures such as buildings, bridges, dams, wind turbines etc. need to be maintained against various factors such as deterioration, excessive loads, environment, temperature, etc. Choosing an appropriate monitoring system is important for determining any critical damage to a structure and address that to avoid any adverse consequence. Structural Health Monitoring (SHM) has emerged as an effective technique to monitor the health of the structures. SHM refers to an ongoing structural performance assessment using different kinds of sensors attached to or embedded in the structures to evaluate their integrity and safety to help engineers decide on rehabilitation measures. Ability of SHM in identifying the location and severity of structural damages by considering any changes in characteristics of the structures such as their frequency, stiffness and mode shapes helps engineers to monitor the structures and take the most effective corrective actions to maintain their safety and extend their service life. The main objective of this study is to review the overall SHM process specifically determining the natural frequency of an instrumented simply-supported concrete beam using modal testing and finite element model updating.

Keywords: Structural Health Monitoring, Natural Frequency, FFT analysis, Finite element model updating.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1124679

References:

[1] ISIS Canada, (2004) Educational Module No. 5: An Introduction to Structural Health Monitoring, Prepared by ISIS Canada: A Canadian Network of Centres of Excellence, www.isiscanada.com.
[2] Worden K, Dulieu-Barton JM (2004), “An overview of intelligent fault detection in systems and structures”. Int J Struct Health Monit 3:8598.
[3] Teng J. Xiao Y. Liu C. Yu H. Liu H, (2012). “Practical Structural Health Monitoring systems in Large Space Structures”, Earth and Space 2012 © ASCE.
[4] Bagchi, A. (2005), “Updating the mathematical model of a structure using the measured vibration characteristics”, Journal of Vibration and Control, 11(12): 1469-1486.
[5] Gopalakrishnan S. Ruzzene M. Hanagud S. (2011). “Computational Techniques for Structural Health Monitoring”. ISSN 1614-7839, ISBN 978-0-85729-283-4, Springer London Dordrecht Heidelberg New York.
[6] Heintz D. “Essential Components of Data Acquisition Systems”. Agilent Technologies, Multi-Industry Business Unit.
[7] Design Considerations for a Data Acquisition System (DAS), (2002), Intersil Americas Inc.
[8] Kullaa, J (2012) “Sequential Structural Health Monitoring and Damage Detection”, 6th European Workshop on Structural Health Monitoring - Th.2.D.1.
[9] Huston D. (2011), “Structural Sensing, Health Monitoring and Performance Evaluation”. CRC Press, Taylor & Francis Group, http://www.taylorandfrancis.com, http://www.crcpress.com
[10] Bagchi, A., Humar, J. and Noman, A. (2007), “Development of a Finite Element System for Vibration Based Damage Identification in Structures”, Journal of Applied Sciences, 7(17): 2404-2413.