Finite element modelling of lamb wave propagation in prestress concrete and effect of the prestress force on the wave’s characteristic

Hussin, Manal, Chan, Tommy H.T., Fawzia, Sabrina, & Ghasemi, Negareh (2015) Finite element modelling of lamb wave propagation in prestress concrete and effect of the prestress force on the wave’s characteristic. In 10th RMS Annual Bridge Conference: Bridges – Safe and Effective Road Network, 2 - 3 December 2015, Ultimo, N.S.W.


In order to assess the structural reliability of bridges, an accurate and cost effective Non-Destructive Evaluation (NDE) technology is required to ensure their safe and reliable operation. Over 60% of the Australian National Highway System is prestressed concrete (PSC) bridges according to the Bureau of Transport and Communication Economics (1997). Most of the in-service bridges are more than 30 years old and may experience a heavier traffic load than their original intended level.

Use of Ultrasonic waves is continuously increasing for (NDE) and Structural Health Monitoring (SHM) in civil, aerospace, electrical, mechanical applications. Ultrasonic Lamb waves are becoming more popular for NDE because it can propagate long distance and reach hidden regions with less energy loses.

The purpose of this study is to numerically quantify prestress force (PSF) of (PSC) beam using the fundamental theory of acoustic-elasticity.

A three-dimension finite element modelling approach is set up to perform parametric studies in order to better understand how the lamb wave propagation in PSC beam is affected by changing in the PSF level. Results from acoustic-elastic measurement on prestressed beam are presented, showing the feasibility of the lamb wave for PSF evaluation in PSC bridges.

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ID Code: 92622
Item Type: Conference Paper
Refereed: Yes
Keywords: Prestressed concrete, Lamb wave, Ultrasonic, bridge
Divisions: Current > Schools > School of Civil Engineering & Built Environment
Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2015 [Please consult the author]
Deposited On: 04 Feb 2016 23:30
Last Modified: 24 May 2016 16:09

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