Lamb wave sensors for detecting wall defects in pipes

Dongshan Guo, Tribikram Kundu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

A number of sensors have been designed and fabricated for pipeline inspection. These sensors require commercially available ultrasonic transducers but use a new coupling mechanism. Some of these sensors require the presence of a coupling fluid between the ultrasonic transducer and the pipe. These sensors can inspect horizontal pipes. Other sensors use solid coupling medium and can be used equally well for inspecting horizontal, vertical or inclined pipes. Our objective is to generate different modes of the cylindrical guided waves in pipes. The new coupling mechanisms have been designed to generate different axisymmetric and non-axisymmetric Lamb modes in the pipe by changing the excitation frequency, inclination angle and number of transmitters. These Lamb wave sensors have been used to inspect a number of defect-free and defective pipes. The preliminary results show that these sensors can detect the pipe defects even when the defects are located at a distance. A comparison between the degree of damage and the Lamb wave generated received signal shows that a correlation exists between the two. Hence, this technique can be used for detecting the pipe damage as well as for predicting its degree of damage. Experimental results are presented to justify this claim.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages610-618
Number of pages9
Volume3995
StatePublished - 2000
EventNondestructive Evaluation of Highways, Utilities, and Pipelines IV - Newport Beach, CA, USA
Duration: Mar 7 2000Mar 9 2000

Other

OtherNondestructive Evaluation of Highways, Utilities, and Pipelines IV
CityNewport Beach, CA, USA
Period3/7/003/9/00

Fingerprint

Lamb waves
Surface waves
Pipe
Defects
sensors
defects
Sensors
Ultrasonic transducers
damage
transducers
ultrasonics
Guided electromagnetic wave propagation
transmitters
inclination
inspection
Transmitters
Pipelines
Inspection
Fluids
fluids

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Guo, D., & Kundu, T. (2000). Lamb wave sensors for detecting wall defects in pipes. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 3995, pp. 610-618). Society of Photo-Optical Instrumentation Engineers.

Lamb wave sensors for detecting wall defects in pipes. / Guo, Dongshan; Kundu, Tribikram.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3995 Society of Photo-Optical Instrumentation Engineers, 2000. p. 610-618.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Guo, D & Kundu, T 2000, Lamb wave sensors for detecting wall defects in pipes. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 3995, Society of Photo-Optical Instrumentation Engineers, pp. 610-618, Nondestructive Evaluation of Highways, Utilities, and Pipelines IV, Newport Beach, CA, USA, 3/7/00.
Guo D, Kundu T. Lamb wave sensors for detecting wall defects in pipes. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3995. Society of Photo-Optical Instrumentation Engineers. 2000. p. 610-618
Guo, Dongshan ; Kundu, Tribikram. / Lamb wave sensors for detecting wall defects in pipes. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3995 Society of Photo-Optical Instrumentation Engineers, 2000. pp. 610-618
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