Application of Information Entropy in the Cement Grouting Test Using Impact Acoustics

Abstract:

The unqualified corrugated pipe grouting quality in bridges will lead to serious safety accidents. The sound field propagation in corrugated pipe structure was simulated and analyzed using finite element method, a much complex wave propagation characteristic is demonstrated, and the scattering signals caused by grouting defect are hardly distinguished. The collected impact-echo signals were processed by signal processing of information entropy technology. It is found the defect size is directly related to the information entropy. Several simulated models are constructed and measured, and the bigger size defect is, the lower entropy value is.

• Periodical: Applied Mechanics and Materials (Volumes 584-586)
• Pages: 1217-1223
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.584-586.1217
• Online since: July 2014
• Authors: Jin Cheng, Qing Bang Han, Hong Hui Fan
• Keywords: Corrugated Pipe, Information Entropy, Nondestructive Testing

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