Share Email Print
cover

Proceedings Paper

GPR survey for pipe leakage detection: experimental and analytical study
Author(s): L. Dong; S. Carnalla; M. Shinozuka
Format Member Price Non-Member Price
PDF $17.00 $21.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

To evaluate the potential of detecting leakage of water pipes using ground-penetrating radar (GPR), a lab experiment is conducted as well as numerical modeling. In the experiment, an artificial 'leakage' is put under, beside and above a pipe buried in dry soil, simulating different leakage locations. By scanning such an experimental model using commercial GPR, more understanding is gained regarding the signature of leakage in GPR profile. Compared to a distinct hyperbola as shown in GPR profile of intact pipes, the leakage zone is disturbed by the wave reflections caused by saturated soil. Furthermore, a numerical model is constructed to simulate such a phenomenon. Maxwell's equations, permittivity distribution of dry and saturated soil, and artificial absorbing boundary conditions are the three key points of such a model. Numerically simulated results seem to be in agreement with experimental results. And the signature of leakage is also visible in the simulated GPR profile. Therefore, GPR survey seems to be promising as an efficient and nondestructive remote leakage detection approach. And the effects of background inhomogeneity and ground-surface roughness can be investigated in future using such an experimental or simulation approach.

Paper Details

Date Published: 4 April 2012
PDF: 7 pages
Proc. SPIE 8347, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2012, 83470F (4 April 2012); doi: 10.1117/12.917407
Show Author Affiliations
L. Dong, Univ. of California, Irvine (United States)
S. Carnalla, Univ. of California, Irvine (United States)
M. Shinozuka, Univ. of California, Irvine (United States)


Published in SPIE Proceedings Vol. 8347:
Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2012
Andrew L. Gyekenyesi, Editor(s)

© SPIE. Terms of Use
Back to Top