Comparative Analysis of AE Signals from Damage Processes of Concrete Using Different Sensors

Abstract:

Choosing appropriate acoustic emission (AE) sensors is crucial for the research of concrete damage failure processes using AE technology. In this paper, concrete testing under axial tension and compression is used as the main research method, and the choices of AE sensors in monitoring the fracture process of concrete are studied using digital parameters-waveform AE acquire system and four different types of AE sensors. The result showed that the broadband sensor received more signals and their frequency is wider, Broadband sensor shows certain technical advantage in monitoring the damage process of concrete under different stress conditions, embodied as collecting wider frequency range of AE signal, especially the high frequency produced in the anaphase of loading.

• Periodical: Applied Mechanics and Materials (Volumes 204-208)
• Pages: 3169-3173
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.204-208.3169
• Online since: October 2012
• Authors: Yan Wang, Zheng Zheng Xu, Yao Wang, Gui Juan Lu, Hai Tao Zhao
• Keywords: Acoustic Emission (AE), Concrete, Sensor, Signal

References

[1] Bing Chen, Juanyu Liu. Damage in carbon fiber-reinforced concrete, monitored by both electrical resistance measurement and acoustic emission analysis[J]. Construction and Building Materials (2007).

DOI: 10.1016/j.conbuildmat.2007.08.004

[2] A. I. Sagaidak, S. V. Elizarov. AE parameters correlated with fracture and deformation processes of concrete members [J]. Construction and Building Materials. 2007, 21(3): 477-482.

DOI: 10.1016/j.conbuildmat.2006.04.004

[3] Dimitrios G. Aggelis . Classification of cracking mode in concrete by acoustic emission parameters[J]．Mechanics Research Communications, 2011, 38(3): 153-157.

DOI: 10.1016/j.mechrescom.2011.03.007

[4] PCI-8 Based ae system user' s manual, REV 0, Physical Acoustics Corporation, (2002).