A Study on Characteristics of Leak Signals of Pipeline Using Acoustic Emission Technique

Min Rae Lee; Joon Hyun Lee

doi:10.4028/www.scientific.net/SSP.110.79

Paper Titles

Detection and Evaluation of Localized Damage under Creep-Fatigue Loading at 1000°F Using Acoustic Emission Technique
p.45

Analysis of Three-Dimensional Cracks with Independent Crack Mesh
p.55

A Method of J Testing Based on Crack Opening Displacement for Circumferential Through-Wall Cracked Pipes under Combined Tension and Bending
p.63

Interrelationship between Stress Intensity Factor and Acoustic Emission Parameter in the Opening Mode Fatigue Crack Propagation
p.71

A Study on Characteristics of Leak Signals of Pipeline Using Acoustic Emission Technique
p.79

Quantification of Crack-Tip Constraint Effect on Master Curve Reference Temperature Based on Two-Parameter Approach
p.89

Application of Ultrasonic Phased Array Techniques for Inspection of Stud Bolts in Nuclear Power Plants
p.97

A Nondestructive Life Evaluation Using Creep-Fatigue Damage by SDA
p.105

Ultrasonic NDE System Modeling and Reliability – An Overview
p.111

HomeSolid State PhenomenaSolid State Phenomena Vol. 110A Study on Characteristics of Leak Signals of...

A Study on Characteristics of Leak Signals of Pipeline Using Acoustic Emission Technique

Abstract:

This study presents an approach to leak detection of pipeline review in terms of theoretical analysis such as acoustics and hydromechanics that should be accompanied by explanation of leakage. The acoustic emission signals during leak from circular hole of different geometries were studied both analytically and experimentally. The relationships between acoustic parameters and fluid mechanical parameters also were derived analytically. A quadrupole aerodynamic model was applied for the analysis of leak from the circular hole. Computer simulation results demonstrate the effectiveness of the proposed approach. In addition, it was confirmed that the wavelet transform (WT) was an effective tool to determine source location. That is, arrival times of each frequency component needed in the velocity calculation could be determined from the peak of the magnitude of wavelet transform data on the time-frequency plane.

You might also be interested in these eBooks

Advances in Safety and Structural Integrity 2005

View Preview

Info:

Periodical:

Solid State Phenomena (Volume 110)

Pages:

79-88

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.110.79

Citation:

Cite this paper

Online since:

March 2006

Authors:

Min Rae Lee, Joon Hyun Lee

Keywords:

Acoustic Emission (AE), Aerodynamic Model, Leak Detection, Wavelet Transform (WT)

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] Watanabe, K., and Shiba, K., Development of Acoustic Leak Detection in a Primary Cooling System, Proceeding of CNS 2nd Annual Conference Ottawa (1981).

Google Scholar

[2] Uchicawa, T., and Watanabe, K., Experiment on Propagation Characteristics of Leakage Sound : Effects of Frequency Range and a Diameter of Leak Hole on Attenuation Rate, (1981).

Google Scholar

[3] M.R. Lee and J.H. Lee, ASME/JSME Pressure Vessel and Piping Conference, PVP-Vol. 484 (2004), pp.215-222.

Google Scholar

[4] Morse, F.M., and Ingard, K.U., Theoretical Acoustics, (Mc-Graw Hill 1961), pp.760-776.

Google Scholar

[5] Liepmann, H.W., and Rochko, A., Element of Gas Dynamics, (John Wiley and Sons 1957).

Google Scholar

[6] Light Hill, M.J., On Sound Generated Aerodynamically, Proceeding of the Royal Society, 11 (1952), pp.564-587.

Google Scholar

[7] Noiret D and Roget J: Journal of Comp. Mater., Vol 23 (1989), pp.195-206.

Google Scholar

[8] Kishimoto K. and Inoue H: Jonrnal of Appl Mech, Vol. 62 (1995), pp.841-846.

Google Scholar