Abstract
Acoustic emission analysis (AEA) has become a promising method to monitor the change in the condition of concrete structures. The research project aims at establishing localisation algorithms using heterogeneous velocity models. Taking the heterogeneity of concrete and the influence of reinforcement into account will improve the source localisation accuracy. Until now it is common to use homogeneous velocity models to localize the AE source. A new numerical reinforced concrete model (NRCM) as well as a MATLAB script for three dimensional acoustic tomography are developed. These two approaches are used to generate models where the wave propagation velocity is a function of the coordinates. Subsequently, a localization method is modified for processing these heterogeneous velocity models. The combination of three dimensional acoustic tomography with AE analysis is a novel and promising approach.
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