Application of Acoustic Emission Tomography Technique in Concrete

Abstract:

This paper discusses the development of acoustic emission tomography to identify structural discontinuities in concrete. An algorithm was developed to reconstruct velocity tomographs of the interior of the material. Both theoretical analysis and experimental data were used to determine best sensor array geometry. Experiments on a concrete block with artificial fracture indicate that the technique can be used to identify structural discontinuities.

• Periodical: Applied Mechanics and Materials (Volumes 405-408)
• Pages: 1115-1120
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.405-408.1115
• Online since: September 2013
• Authors: Yan Cheng, Paul Hagan, Rudrajit Mitra
• Keywords: Acoustic Emission (AE), Concrete, Fracture, Signal Processing, Tomography

References

[1] R. Mitra, Imaging of stress in rock samples using numerical modeling and laboratory tomography, Ph.D., Virginia Polytechnic Institute and State University, Virginia, (2006).

[2] I. L. Meglis, T. M. Chows, and R. P. Young: Progressive microcrack development in tests in Lac du Bonnet granite-I. Acoustic emission source location and velocity measurements, International Journal of Rock Mechanics and Mining Science & Geomechanics Abstracts, Vol. 32 (1995).

DOI: 10.1016/0148-9062(95)00014-8

[3] S. D. Falls, R. P. Young, S. R. Carlson, and T. Chow: Ultrasonic tomography and acoustic emission in hydraulically fractured Lac du Bonnet grey granite, J. Geophys. Res., Vol. 97 (1992), p.6867.

DOI: 10.1029/92jb00041

[4] H. K. Chai, S. Momoki, Y. Kobayashi, D. G. Aggelis, and T. Shiotani: Tomographic reconstruction for concrete using attenuation of ultrasound, NDT & E International, Vol. 44 (2011), p.206.

DOI: 10.1016/j.ndteint.2010.11.003

[5] R. P. Young, D. S. Collins, W. S. Pettitt, and J. F. Hazzard: Imaging and visualization of fractures in rock engineering(Millpress Science Publishers, Rotterdam 2004).

[6] F. Schubert, Tomography techniques for acoustic emission monitoring, in 9th European Conference on NDT Berlin (Germany) (2006).

[7] Y. CHENG, R. MITRA, and P. HAGAN, Development and Future Aspect of Acoustic Emission Data Processing Methods, in 30th European Conference on Acoustic Emission Testing & 7th International Conference on Acoustic Emission, University of Granada (2012).

[8] S. D. Falls, Ultrasonic imaging and acoustic emission studies of microcrack development in Lac du Bonnet granite, " Ph.D., Queen, s University at Kingston (Canada), Kingston, (1993).

[9] J. Evans, D. Eberhart-Phillips, and C. H. Thurber, User's manual for SIMULPS12 for imaging Vp and Vp/Vs: A derivative of the Thurber, tomographic inversion SIMUL3 for local earthquakes and explosions, U.S. Dept. of the Interior, U.S. Geological Survey, (1994).

DOI: 10.3133/ofr94431

[10] ASTM, E976-00 Standard Guide for Determining the Reproducibility of Acoustic Emission Sensor Response, ASTM International, 2001, p.9.

[11] H. R. Hardy: Acoustic Emission, Microseismic Activity: Principles, techniques, and geotechnical applications(Taylor & Francis Lisse 2003).

[12] R. Sleeman, and T. van Eck: Robust automatic P-phase picking: an on-line implementation in the analysis of broadband seismogram recordings, Physics of the Earth and Planetary Interiors, Vol. 113 (1999), p.265.

DOI: 10.1016/s0031-9201(99)00007-2