A high sensitivity transformer coupled system for the detection and imaging of breaks in prestressing tendons in concrete pipes

Bosco Fernandes; G. Miller; H. Hussin; F. El Madaani; M. Zaid; P. Gaydecki; S. Quek

doi:10.1063/1.2902584

A high sensitivity transformer coupled system for the detection and imaging of breaks in prestressing tendons in concrete pipes

Bosco Fernandes^*, G. Miller, H. Hussin, F. El Madaani, M. Zaid, P. Gaydecki, S. Quek

^*Corresponding author for this work

Research output: Chapter in Book/Conference proceeding › Conference contribution › peer-review

Abstract

A system has been developed, described here, which can detect and image localised faults and breaks in the prestressing tendons of large bore concrete pipes, intended for the transport of water. The system exploits the principle of magnetic field transformer coupling, in which a low frequency time varying field is transmitted over the region being inspected. Perturbations in the amplitude and phase of the signal that arise from variations in the coupling conditions are detected by a receiving system and fed to instrumentation for processing, image reconstruction and interpretation. The system has been field trialled in 4 m diameter pipes in the Sahara desert. Results confirm that it is capable of detecting and imaging as few as two adjacent tendon breaks, in which the diameter of the tendon was 7 mm and the pitch was 20 mm.

Original language	English
Title of host publication	Review of Progress in QuantitativeNondestructive Evaluation
Pages	1305-1313
Number of pages	9
Volume	975
DOIs	https://doi.org/10.1063/1.2902584
Publication status	Published - 2008
Event	34th Annual Review of Progress in Quantitative Nondestructive Evaluation - Golden, CO, United States Duration: 22 Jul 2007 → 27 Jul 2007

Conference

Conference	34th Annual Review of Progress in Quantitative Nondestructive Evaluation
Country/Territory	United States
City	Golden, CO
Period	22/07/07 → 27/07/07

Keywords

Digital signal processing
Eddy current sensor
Imaging steel
Transformer coupling

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10.1063/1.2902584

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title = "A high sensitivity transformer coupled system for the detection and imaging of breaks in prestressing tendons in concrete pipes",

abstract = "A system has been developed, described here, which can detect and image localised faults and breaks in the prestressing tendons of large bore concrete pipes, intended for the transport of water. The system exploits the principle of magnetic field transformer coupling, in which a low frequency time varying field is transmitted over the region being inspected. Perturbations in the amplitude and phase of the signal that arise from variations in the coupling conditions are detected by a receiving system and fed to instrumentation for processing, image reconstruction and interpretation. The system has been field trialled in 4 m diameter pipes in the Sahara desert. Results confirm that it is capable of detecting and imaging as few as two adjacent tendon breaks, in which the diameter of the tendon was 7 mm and the pitch was 20 mm.",

keywords = "Digital signal processing, Eddy current sensor, Imaging steel, Transformer coupling",

author = "Bosco Fernandes and G. Miller and H. Hussin and {El Madaani}, F. and M. Zaid and P. Gaydecki and S. Quek",

year = "2008",

doi = "10.1063/1.2902584",

language = "English",

isbn = "9780735404946",

volume = "975",

pages = "1305--1313",

booktitle = "Review of Progress in QuantitativeNondestructive Evaluation",

note = "34th Annual Review of Progress in Quantitative Nondestructive Evaluation ; Conference date: 22-07-2007 Through 27-07-2007",

}

Fernandes, B, Miller, G, Hussin, H, El Madaani, F, Zaid, M, Gaydecki, P & Quek, S 2008, A high sensitivity transformer coupled system for the detection and imaging of breaks in prestressing tendons in concrete pipes. in Review of Progress in QuantitativeNondestructive Evaluation. vol. 975, pp. 1305-1313, 34th Annual Review of Progress in Quantitative Nondestructive Evaluation, Golden, CO, United States, 22/07/07. https://doi.org/10.1063/1.2902584

TY - GEN

T1 - A high sensitivity transformer coupled system for the detection and imaging of breaks in prestressing tendons in concrete pipes

AU - Fernandes, Bosco

AU - Miller, G.

AU - Hussin, H.

AU - El Madaani, F.

AU - Zaid, M.

AU - Gaydecki, P.

AU - Quek, S.

PY - 2008

Y1 - 2008

N2 - A system has been developed, described here, which can detect and image localised faults and breaks in the prestressing tendons of large bore concrete pipes, intended for the transport of water. The system exploits the principle of magnetic field transformer coupling, in which a low frequency time varying field is transmitted over the region being inspected. Perturbations in the amplitude and phase of the signal that arise from variations in the coupling conditions are detected by a receiving system and fed to instrumentation for processing, image reconstruction and interpretation. The system has been field trialled in 4 m diameter pipes in the Sahara desert. Results confirm that it is capable of detecting and imaging as few as two adjacent tendon breaks, in which the diameter of the tendon was 7 mm and the pitch was 20 mm.

AB - A system has been developed, described here, which can detect and image localised faults and breaks in the prestressing tendons of large bore concrete pipes, intended for the transport of water. The system exploits the principle of magnetic field transformer coupling, in which a low frequency time varying field is transmitted over the region being inspected. Perturbations in the amplitude and phase of the signal that arise from variations in the coupling conditions are detected by a receiving system and fed to instrumentation for processing, image reconstruction and interpretation. The system has been field trialled in 4 m diameter pipes in the Sahara desert. Results confirm that it is capable of detecting and imaging as few as two adjacent tendon breaks, in which the diameter of the tendon was 7 mm and the pitch was 20 mm.

KW - Digital signal processing

KW - Eddy current sensor

KW - Imaging steel

KW - Transformer coupling

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U2 - 10.1063/1.2902584

DO - 10.1063/1.2902584

M3 - Conference contribution

AN - SCOPUS:40849113354

SN - 9780735404946

VL - 975

SP - 1305

EP - 1313

BT - Review of Progress in QuantitativeNondestructive Evaluation

T2 - 34th Annual Review of Progress in Quantitative Nondestructive Evaluation

Y2 - 22 July 2007 through 27 July 2007

ER -

A high sensitivity transformer coupled system for the detection and imaging of breaks in prestressing tendons in concrete pipes

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