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Sensors 2014, 14(9), 17174-17191; doi:10.3390/s140917174

A Vibration-Based Strategy for Health Monitoring of Offshore Pipelines’ Girth-Welds

Advanced Composites and Mechanics Laboratory, Department of Civil and Resource Engineering, Dalhousie University, 1360 Barrington Street, Halifax, NS, B3H 4R2, Canada
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Received: 30 June 2014 / Revised: 8 August 2014 / Accepted: 10 September 2014 / Published: 15 September 2014
(This article belongs to the Special Issue Sensors for Fluid Leak Detection)
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Abstract

This study presents numerical simulations and experimental verification of a vibration-based damage detection technique. Health monitoring of a submerged pipe’s girth-weld against an advancing notch is attempted. Piezoelectric transducers are bonded on the pipe for sensing or actuation purposes. Vibration of the pipe is excited by two means: (i) an impulsive force; (ii) using one of the piezoelectric transducers as an actuator to propagate chirp waves into the pipe. The methodology adopts the empirical mode decomposition (EMD), which processes vibration data to establish energy-based damage indices. The results obtained from both the numerical and experimental studies confirm the integrity of the approach in identifying the existence, and progression of the advancing notch. The study also discusses and compares the performance of the two vibration excitation means in damage detection. View Full-Text
Keywords: vibration-based damage detection; empirical mode decomposition (EMD); submerged pipelines; girth-weld; piezoelectric transducers; energy-based damage index vibration-based damage detection; empirical mode decomposition (EMD); submerged pipelines; girth-weld; piezoelectric transducers; energy-based damage index
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Razi, P.; Taheri, F. A Vibration-Based Strategy for Health Monitoring of Offshore Pipelines’ Girth-Welds. Sensors 2014, 14, 17174-17191.

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