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Vibration based damage identification of a scale-model steel frame structure subjected to bolt connection failures

Ay, Ali Mete, Wang, Ying, Khoo, Sui Yang and Li, An-Jui 2013, Vibration based damage identification of a scale-model steel frame structure subjected to bolt connection failures, in SHMII-6 2013 : Proceedings of the Structural Health Monitoring of Intelligent Infrastructure 2013 international conference, Hong Kong Polytechnic University, Hong Kong, China, pp. 1-9.

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Title Vibration based damage identification of a scale-model steel frame structure subjected to bolt connection failures
Author(s) Ay, Ali Mete
Wang, Ying
Khoo, Sui Yang
Li, An-Jui
Conference name Structural Health Monitoring of Intelligent Infrastructure. International Conference (6th : 2013 : Hong Kong, China)
Conference location Hong Kong, China
Conference dates 9 - 11 Dec. 2013
Title of proceedings SHMII-6 2013 : Proceedings of the Structural Health Monitoring of Intelligent Infrastructure 2013 international conference
Editor(s) Xu, Y. L.
Zhu, S.
Xia, Y.
Ni, Y. Q.
Law, S. S.
Yin, J. H.
Su, Z. Q.
Publication date 2013
Conference series Structural Health Monitoring of Intelligent Infrastructure International Conference
Start page 1
End page 9
Total pages 9
Publisher Hong Kong Polytechnic University
Place of publication Hong Kong, China
Keyword(s) ARMAX
bolt connection
impact testing
structural health monitoring
time domain steel frame
Summary Large-span steel frame structures prove to be an ideal choice for their speed of construction, relatively low cost, strength, durability and structural design flexibility. For this type of structure, the beam-column connections are critical for its structural integrity and overall stability. This is because a steel frame generally fails first at its connectors, due to the change in stress redistribution with adjacent members and material related failures, caused by various factors such as fire, seismic activity or material deterioration. Since particular attention is required at a steel frame’s connection points, this study explores the applicability of a comprehensive structural health monitoring (SHM) method to identify early damage and prolong the lifespan of connection points of steel frames. An impact hammer test was performed on a scale-model steel frame structure, recording its dynamic response to the hammer strike via an accelerometer. The testing procedure included an intact scenario and two damage scenarios by unfastening four bolt connections in an accumulating order. Based entirely on time-domain experimental data for its calibration, an Auto Regressive Average Exogenous (ARMAX) model is used to create a simple and accurate model for vibration simulation. The calibrated ARMAX model is then used to identify various bolt-connection related damage scenarios via R2 value. The findings in this study suggest that the proposed time-domain approach is capable of identifying structural damage in a parsimonious manner and can be used as a quick or initial solution.
Language eng
Field of Research 090506 Structural Engineering
090609 Signal Processing
Socio Economic Objective 970101 Expanding Knowledge in the Mathematical Sciences
HERDC Research category E1 Full written paper - refereed
Copyright notice ©2013, Hong Kong Polytechnic University
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30062898

Document type: Conference Paper
Collections: School of Engineering
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.