Underwater pipeline inspection using guided waves

Won Bae Na, Tribikram Kundu

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

Abstract

Underwater pipeline inspections are conducted using ultrasonic cylindrical guided waves in the laboratory environment. Three different types of mechanical defects - gouge, removed metal, and dent, are fabricated in small diameter, 22.22 mm, aluminum pipes and tested. To efficiently propagate the antisymmetric (flexural) cylindrical guided waves through the aluminum pipe in water, a new transducer holder device is designed. The device uses commercially available ultrasonic transducers that generate compressional ultrasonic waves in the water. The device can change the striking angle of the incident beam from 0° to 51°. With the help of this device the incident angle adjustment and frequency sweeping can be carried out. This is necessary for obtaining the time history of the received signals for various incident angles and signal frequencies; then these time histories are converted to V(f) curves, or received signal amplitude vs. frequency curves. From the amplitude of these V(f) curves the type and extent of the mechanical defects can be estimated. This investigation shows that the new coupler device can be effectively used for health monitoring of underwater pipelines using guided waves.

Original languageEnglish (US)
Title of host publicationAmerican Society of Mechanical Engineers (Publication) NDE
EditorsC/ Cetinkaya
Pages37-47
Number of pages11
Volume21
StatePublished - 2001
Event2001 ASME International Mechanical Engineering Congress and Exposition - New York, NY, United States
Duration: Nov 11 2001Nov 16 2001

Other

Other2001 ASME International Mechanical Engineering Congress and Exposition
CountryUnited States
CityNew York, NY
Period11/11/0111/16/01

Fingerprint

Submarine pipelines
Guided electromagnetic wave propagation
Aluminum pipe
Inspection
Defects
Ultrasonic transducers
Ultrasonic waves
Water
Transducers
Ultrasonics
Health
Monitoring
Metals

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Na, W. B., & Kundu, T. (2001). Underwater pipeline inspection using guided waves. In C. Cetinkaya (Ed.), American Society of Mechanical Engineers (Publication) NDE (Vol. 21, pp. 37-47)

Underwater pipeline inspection using guided waves. / Na, Won Bae; Kundu, Tribikram.

American Society of Mechanical Engineers (Publication) NDE. ed. / C/ Cetinkaya. Vol. 21 2001. p. 37-47.

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

Na, WB & Kundu, T 2001, Underwater pipeline inspection using guided waves. in C Cetinkaya (ed.), American Society of Mechanical Engineers (Publication) NDE. vol. 21, pp. 37-47, 2001 ASME International Mechanical Engineering Congress and Exposition, New York, NY, United States, 11/11/01.
Na WB, Kundu T. Underwater pipeline inspection using guided waves. In Cetinkaya C, editor, American Society of Mechanical Engineers (Publication) NDE. Vol. 21. 2001. p. 37-47
Na, Won Bae ; Kundu, Tribikram. / Underwater pipeline inspection using guided waves. American Society of Mechanical Engineers (Publication) NDE. editor / C/ Cetinkaya. Vol. 21 2001. pp. 37-47
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