[KSCI] Korea Science Citation Index Service

Attenuation of Fundamental Longitudinal Guided Wave Mode in Steel Pipes Embedded in Soil

Lee, Ju-Won (Department of Ocean Engineering, Pukyong National University)
Shin, Sung-Woo (Division of Safety Engineering, Pukyong National University)
Na, Won-Bae (Department of Ocean Engineering, Pukyong National University)

Publication Information

Journal of the Korean Society for Nondestructive Testing / v.30, no.6, 2010 , pp. 539-547 More about this Journal

Abstract

In this study, characteristics of the fundamental longitudinal guided wave mode, L(0,1), which is a usual mode employed in the inspection of the above-ground pipe, of the buried pipe were numerically investigated considering property changes in the surrounding soil. Results showed that soil conditions are significantly affecting the attenuation of L(0,1) mode in the pipe embedded in soil. Especially, if the soil is partially saturated, the attenuation of L(0,1) mode is larger and is very similar regardless of the degree of water saturation in the surrounding soil. However, when the soil is fully saturated, the attenuation of L(0,1) mode is less and show different trend with its partially saturated counterparts.

Keywords

Guided Waves; NDT of Buried Pipes; Mode Attenuation; Waves in Soil;

Citations & Related Records

Reference

1	Rose, J. L. (2002) A Baseline and Vision of Ultrasonic Guided Wave Inspection Potential, Journal of Pressure Vessel Technology, Vol. 124(3), pp. 273-283 DOI ScienceOn
2	Rose, J. L. (2004) Ultrasonic Waves in Soild Media, Cambridge University Press
3	Santamarina, J. C. (2001) Soils and Waves, John Wiley & Sons
4	ANSI/API Spec 5L : Specification for Line Pipe, American Petroleum Institute, 2007
5	Bachrach, R. and Nur, A. (1998) High-Resolution Shallow-Seismic Experiments in Sand, Part I : Water Table, Fluid Flow, and Saturation," Geophysics, Vol. 63(4), pp. 1225-1233 DOI ScienceOn
6	Fratta, D., Alshibli, K. A., Tanner, W. M. and Roussel, L. (2005) Combined TDR and P-wave Velocity Measurements for the Determination of In Situ Soil Density - Experimental Study, Geotechnical Testing Journal, Vol. 28(6), pp. 1-11
7	Gazis, D. C. (1958) Exact Analysis of the Plane-Strain Vibrations of Thick-walled Hollow Cylinders, Journal of Acoustical Society of America, Vol. 31, pp. 568-578
8	Hardin, B. O. and Blandford, G. E. (1989) Elasticity of Particulate Materials, ASCE Journal of Geotechnical Engineering, Vol. 115(6), pp. 788-805 DOI
9	Monahan, E. J. (1994) Construction of Fills : 2nd Edition, John Wiley and Sons
10	Lowe, M. J. S. (1995) Matrix Technique for Modelling Ultrasonic Waves in Multilayered Media, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, Vol. 42(4), pp. 525-542 DOI
11	Pavlakovic, B. and Lowe, M. J. S.(2003) DISPERSE USER MANUAL : A System for Generating Dispersion Curves, Department of Mechanical Engineering, Imperial College, University of London
12	Qian, X., Gray, D. H. and Woods, R. D. (1993) Voids and Granulometry: Effects on Shear Modulus of Unsaturated Sands, ASCE Journal of Geotechnical Engineering, Vol. 119(2), pp. 295-314 DOI