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Please use this identifier to cite or link to this item: http://hdl.handle.net/10481/35299

Title: Simulation and Experimental Investigation on the AE Tomography to Improve AE Source Location in the Concrete Structure
Authors: Jiang, Yu
Xu, Feiyun
Xu, Bingsheng
Jia, Minping
Hu, Jianzhong
Gallego Molina, Antolino
Issue Date: 2014
Abstract: Acoustic emission (AE) tomography, which is based on the time-travel tomography with AE events as its signal sources, is a new visualization tool for inspecting and locating the internal damages in the structures. In this paper, AE tomography is applied to examine a man-made damage in a typical heterogeneous concrete structure to validate its effectiveness. Firstly, the finite element (ABAQUS/Explicit) simulation model of the concrete structure with one damaged circle in its center is built, and the simulated AE signals are obtained to establish the AE tomography. The results show that the damaged circle in the created model can be visualized clearly with the AE tomography in its original location. Secondly, the concrete specimen based on the FE model is fabricated, and the pencil lead break (PLB) signal is taken as the exciting source for AE tomography. It is shown that the experimental results have good consistency with the FE simulation results, which also verifies the feasibility of the finite element model for AE tomography. Finally, the damage source location based on AE tomography is compared with the traditional time of arrival (TOA) location method, and the better location accuracy is obtained with the AE tomography. The research results indicate that AE tomography has great potential in the application of structure damage detection.
Sponsorship: Foundation of China (no. 51175079, no. 51305176) as well as the Fundamental Research Funds for the Central Universities (CXLX12 0079).
Publisher: Hindawi Publishing Corporation
Keywords: Emisión acústica
Acoustic emission
Simulación por ordenador
Computer simulation
Procesado de señales
Signal detection
URI: http://hdl.handle.net/10481/35299
ISSN: 1024-123X
Rights : Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License
Citation: Jiang, Y.; et al. Simulation and Experimental Investigation on the AE Tomography to Improve AE Source Location in the Concrete Structure. Mathematical Problems in Engineering, 2014: 512406 (2014). [http://hdl.handle.net/10481/35299]
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