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Crack Detection In Steel Reinforced Concrete Beams based on Vibration Analysis and Guided Waves

Project Member(s): Li, J.

Funding or Partner Organisation: National ICT Australia

Start year: 2013

Summary: This project aims to investigate the effectiveness of the Structural Health Monitoring (SHM) system developed at NICTA for crack identification/propagation in concrete beams based on vibration analysis. Also, the project will investigate the accelerometer responses when they are embedded in concrete. Moreover, the use of piezoelectric ceramics (to excited guided waves) to identify and assess cracking in concrete structures will be demonstrated. The main steps of the project are the following: A. Examine the effect of impact loading on the accelerometer response before and after the crack is introduced. B. Investigate the relationship between the acceleration response and the deterioration in the state of the beam. C. Study the effect of temperature on the accelerometer response before and after the crack is introduced. D. Examine the sensitivity to accelerometer placement and determine the ideal accelerometer placement. E. Investigate the possibility of embedding the accelerometers within the concrete and how that will influence the response of the accelerometers. F. Investigate the effect of cracking within the concrete on the guided wave propagation behaviour. G. Formulate a plan to develop and validate the technique to a point where it could be usefully deployed on a real structure and specifically the Sydney Harbour Bridge

Keywords: Crack Detection, Concrete Structures, Structural Health Monitoring, Vibration

FOR Codes: Commercial Building Management and Services, Structural Engineering