Modeling of the UWB GPR for Reinforced Concrete Quality Inspection

Abstract:

The aim of the work is to investigate the method of modeling of the UWB GPR for reinforced concrete quality test. Several very important techniques which are ideal for UWB GPR, such as Higher-Order Finite-Difference Time-Domain (HOFDTD), absorbing boundary conditions of Convolution Perfectly Matched Layer (CPML), SGS, signal of pulse train modulated by pseudo random codes and etc. are discussed. Numerical experimental results clearly show that the methods described in this article is much better than traditional ones, and prospecting depth and horizontal vertical resolution of the UWB GPR based on the techniques above all are superior to that of normal GPR. It must receive very good results to use the UWB GPR for reinforced concrete quality inspection in projects.

• Periodical: Applied Mechanics and Materials (Volumes 209-211)
• Pages: 1345-1349
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.209-211.1345
• Online since: October 2012
• Authors: Shuang Shi Zhang*, Xu Ben Wang, Wei Hua Wang, Li Feng Mao
• Keywords: Modeling, Quality Inspection, Reinforced Concrete (RC), Ultra Wide Band Ground Penetrating Radar, UWB GPR

References

[1] L.F. Mao, The Forward Simulation and Inversion Imaging of the Ultra Wide Band Electromagnetic Method. PhD Dissertation, Chengdu University of Technology, Chengdu, China. 2007, 23-41

[2] D.B. Ge, Y.B. Yan, Electromagnetic Wave Finite-Difference Time-Domain Method (Chinese edition Second ed.). Xidian University Publishing House, Xian, 2005.

[3] L.G. Dong, Z.T. Ma, J.Z. Cao, A staggered-grid high-order elastic wave equation finite difference method. Chinese Journal of Geophysics, 2000, 43(3):411-418.

DOI: 10.1002/cjg2.107

[4] Okoniewski, M., Okoniewska, E., and Stuchly, M. A., 1997, Three dimensional sub-gridding algorithm for FDTD: IEEE Trans. On. Antennas Prop., 45, 422-429.

DOI: 10.1109/8.558657

[5] Roden J. A. and Gedney S. D. Convolutional PML (CPML): An efficient FDTD implementation of the CFS-PML for arbitrary media, 2000, 27(5): 334-339.

DOI: 10.1002/1098-2760(20001205)27:5<334::aid-mop14>3.0.co;2-a

[6] Chew W.C., Jin J.M. and Michielssen E., Complex coordinate stretching as a generalized absorbing boundary condition. Microwave and Optical Technology Letters, 1997, 15(6): 599-604.

DOI: 10.1002/(sici)1098-2760(19970820)15:6<363::aid-mop8>3.0.co;2-c

[7] S.S. Zhang, Application of Pulse Train of Pseudo-Random Codes in Search and Rescue UWB Radar. MS Thesis. Chengdu University of Technology, Chengdu, China. 2006, 22-41

[8] F.L. Teixeira, W.C. Chew, M. Straka, Finite-difference time-domain simulation of ground penetrating radar on dispersive, inhomogeneous, and conductive soils, IEEE Trans. Geosciences Remote Sensing, November 1998, vol.36, no.6, pp.1928-1937.

DOI: 10.1109/36.729364

[9] P. Hu, Applied Techniques of Ground Penetrating Radar (GPR) Numerical Modeling. PhD Dissertation, China University of Geosciences, Wuhan, China. 2005, 68-70