Non-contact main cable NDE technique for suspension bridge using magnetic flux-based B-H loop measurements

Seunghee Park; Ju Won Kim; Dae Joong Moon

doi:10.1117/12.2176902

Non-contact main cable NDE technique for suspension bridge using magnetic flux-based B-H loop measurements

Seunghee Park, Ju Won Kim, Dae Joong Moon

Department of Civil, Architectural Engineering and Landscape Architecture

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

4 Scopus citations

Abstract

In this study, a noncontact main cable NDE method has been developed. This cable NDE method utilizes the direct current (DC) magnetization and a searching coil-based total flux measurement. A total flux sensor head prototype was fabricated that consists of an electro-magnet yoke and a searching coil sensor. To obtain a B-H loop, a magnetic field was generated by applying a cycle of low frequency direct current to the electro-magnet yoke. During the magnetization, a search coil sensor measures the electromotive force from magnetized cable. During the magnetization process, a search coil sensor was measured the magnetic flux density. Total flux was calculated by integrating the measured magnetic flux using a fluxmeter. A B-H loop is obtained by using relationship between a cycle of input DC voltage and measured total flux. The B-H loop can reflect the property of the ferromagnetic materials. Therefore, the cross-sectional loss of cable can be detected using variation of features from the B-H curve. To verify the feasibility of the proposed steel cable NDE method, a series of experimental studies using a main-cable mock-up specimen has been performed in this study.

Original language	English
Title of host publication	Structural Health Monitoring and Inspection of Advanced Materials, Aerospace, and Civil Infrastructure 2015
Editors	Peter J. Shull
Publisher	SPIE
ISBN (Electronic)	9781628415407
DOIs	https://doi.org/10.1117/12.2176902
State	Published - 2015
Event	Structural Health Monitoring and Inspection of Advanced Materials, Aerospace, and Civil Infrastructure 2015 - San Diego, United States Duration: 9 Mar 2015 → 12 Mar 2015

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	9437
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Structural Health Monitoring and Inspection of Advanced Materials, Aerospace, and Civil Infrastructure 2015
Country/Territory	United States
City	San Diego
Period	9/03/15 → 12/03/15

Keywords

b-h loop
cross-sectional loss
Main cable
non-destructive evaluation
total flux

Access to Document

10.1117/12.2176902

Cite this

Park, S., Kim, J. W., & Moon, D. J. (2015). Non-contact main cable NDE technique for suspension bridge using magnetic flux-based B-H loop measurements. In P. J. Shull (Ed.), Structural Health Monitoring and Inspection of Advanced Materials, Aerospace, and Civil Infrastructure 2015 Article 94370M (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9437). SPIE. https://doi.org/10.1117/12.2176902

Park, Seunghee ; Kim, Ju Won ; Moon, Dae Joong. / Non-contact main cable NDE technique for suspension bridge using magnetic flux-based B-H loop measurements. Structural Health Monitoring and Inspection of Advanced Materials, Aerospace, and Civil Infrastructure 2015. editor / Peter J. Shull. SPIE, 2015. (Proceedings of SPIE - The International Society for Optical Engineering).

@inproceedings{e91b7cf8b0054145a1d3d34208b7a4fb,

title = "Non-contact main cable NDE technique for suspension bridge using magnetic flux-based B-H loop measurements",

abstract = "In this study, a noncontact main cable NDE method has been developed. This cable NDE method utilizes the direct current (DC) magnetization and a searching coil-based total flux measurement. A total flux sensor head prototype was fabricated that consists of an electro-magnet yoke and a searching coil sensor. To obtain a B-H loop, a magnetic field was generated by applying a cycle of low frequency direct current to the electro-magnet yoke. During the magnetization, a search coil sensor measures the electromotive force from magnetized cable. During the magnetization process, a search coil sensor was measured the magnetic flux density. Total flux was calculated by integrating the measured magnetic flux using a fluxmeter. A B-H loop is obtained by using relationship between a cycle of input DC voltage and measured total flux. The B-H loop can reflect the property of the ferromagnetic materials. Therefore, the cross-sectional loss of cable can be detected using variation of features from the B-H curve. To verify the feasibility of the proposed steel cable NDE method, a series of experimental studies using a main-cable mock-up specimen has been performed in this study.",

keywords = "b-h loop, cross-sectional loss, Main cable, non-destructive evaluation, total flux",

author = "Seunghee Park and Kim, \{Ju Won\} and Moon, \{Dae Joong\}",

note = "Publisher Copyright: {\textcopyright} 2015 SPIE.; Structural Health Monitoring and Inspection of Advanced Materials, Aerospace, and Civil Infrastructure 2015 ; Conference date: 09-03-2015 Through 12-03-2015",

year = "2015",

doi = "10.1117/12.2176902",

language = "English",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

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Park, S, Kim, JW & Moon, DJ 2015, Non-contact main cable NDE technique for suspension bridge using magnetic flux-based B-H loop measurements. in PJ Shull (ed.), Structural Health Monitoring and Inspection of Advanced Materials, Aerospace, and Civil Infrastructure 2015., 94370M, Proceedings of SPIE - The International Society for Optical Engineering, vol. 9437, SPIE, Structural Health Monitoring and Inspection of Advanced Materials, Aerospace, and Civil Infrastructure 2015, San Diego, United States, 9/03/15. https://doi.org/10.1117/12.2176902

Non-contact main cable NDE technique for suspension bridge using magnetic flux-based B-H loop measurements. / Park, Seunghee; Kim, Ju Won; Moon, Dae Joong.
Structural Health Monitoring and Inspection of Advanced Materials, Aerospace, and Civil Infrastructure 2015. ed. / Peter J. Shull. SPIE, 2015. 94370M (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9437).

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

TY - GEN

T1 - Non-contact main cable NDE technique for suspension bridge using magnetic flux-based B-H loop measurements

AU - Park, Seunghee

AU - Kim, Ju Won

AU - Moon, Dae Joong

PY - 2015

Y1 - 2015

N2 - In this study, a noncontact main cable NDE method has been developed. This cable NDE method utilizes the direct current (DC) magnetization and a searching coil-based total flux measurement. A total flux sensor head prototype was fabricated that consists of an electro-magnet yoke and a searching coil sensor. To obtain a B-H loop, a magnetic field was generated by applying a cycle of low frequency direct current to the electro-magnet yoke. During the magnetization, a search coil sensor measures the electromotive force from magnetized cable. During the magnetization process, a search coil sensor was measured the magnetic flux density. Total flux was calculated by integrating the measured magnetic flux using a fluxmeter. A B-H loop is obtained by using relationship between a cycle of input DC voltage and measured total flux. The B-H loop can reflect the property of the ferromagnetic materials. Therefore, the cross-sectional loss of cable can be detected using variation of features from the B-H curve. To verify the feasibility of the proposed steel cable NDE method, a series of experimental studies using a main-cable mock-up specimen has been performed in this study.

AB - In this study, a noncontact main cable NDE method has been developed. This cable NDE method utilizes the direct current (DC) magnetization and a searching coil-based total flux measurement. A total flux sensor head prototype was fabricated that consists of an electro-magnet yoke and a searching coil sensor. To obtain a B-H loop, a magnetic field was generated by applying a cycle of low frequency direct current to the electro-magnet yoke. During the magnetization, a search coil sensor measures the electromotive force from magnetized cable. During the magnetization process, a search coil sensor was measured the magnetic flux density. Total flux was calculated by integrating the measured magnetic flux using a fluxmeter. A B-H loop is obtained by using relationship between a cycle of input DC voltage and measured total flux. The B-H loop can reflect the property of the ferromagnetic materials. Therefore, the cross-sectional loss of cable can be detected using variation of features from the B-H curve. To verify the feasibility of the proposed steel cable NDE method, a series of experimental studies using a main-cable mock-up specimen has been performed in this study.

KW - b-h loop

KW - cross-sectional loss

KW - Main cable

KW - non-destructive evaluation

KW - total flux

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U2 - 10.1117/12.2176902

DO - 10.1117/12.2176902

M3 - Conference contribution

AN - SCOPUS:84943409759

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Structural Health Monitoring and Inspection of Advanced Materials, Aerospace, and Civil Infrastructure 2015

A2 - Shull, Peter J.

PB - SPIE

T2 - Structural Health Monitoring and Inspection of Advanced Materials, Aerospace, and Civil Infrastructure 2015

Y2 - 9 March 2015 through 12 March 2015

ER -

Park S, Kim JW, Moon DJ. Non-contact main cable NDE technique for suspension bridge using magnetic flux-based B-H loop measurements. In Shull PJ, editor, Structural Health Monitoring and Inspection of Advanced Materials, Aerospace, and Civil Infrastructure 2015. SPIE. 2015. 94370M. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2176902

Non-contact main cable NDE technique for suspension bridge using magnetic flux-based B-H loop measurements

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