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Development of Induced Magnetic Field Procedure for Nondestructive Evaluation of Deteriorated Prestressing Strand

Titus, Michael D.
http://rave.ohiolink.edu/etdc/view?acc_num=toledo1302289201

Abstract Details

2011, Master of Science, University of Toledo, Civil Engineering.
The induced magnetic field (IMF) procedure for nondestructive evaluation of deteriorated prestressing strand predicts the sound cross-sectional area of strand in embedded concrete. The system utilizes an electromagnet that magnetizes the strand, and an array of hall sensors that measures Gauss readings that indicate the strength of the magnetic field of the strand. This technology allows bridge inspectors to go further than visual inspection when determining the condition of prestressed concrete beams. This thesis discusses the development of the IMF testing system, including both laboratory testing and a field test. During the course of this research, the magnetic flux leakage (MFL) testing procedure was also researched and utilized. The first documented field test of its kind was performed using magnetic inspection on a prestressed box beam bridge. The IMF system accurately predicted corrosion in a laboratory setting, and predicted corrosion during the field test, albeit with limited accuracy. The MFL method predicted corrosion more accurately in the field test.
Douglas Nims, PhD (Committee Chair)
Vijay Devabhaktuni, PhD (Committee Member)
Brian Randolph, PhD (Committee Member)
Engineering
NDE; nondestructive evaluation; prestressed box beams; magnetic inspection; IMF; MFL; field test

Recommended Citations

Citations

  • Titus, M. D. (2011). Development of Induced Magnetic Field Procedure for Nondestructive Evaluation of Deteriorated Prestressing Strand [Master's thesis, University of Toledo]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1302289201

    APA Style (7th edition)

  • Titus, Michael. Development of Induced Magnetic Field Procedure for Nondestructive Evaluation of Deteriorated Prestressing Strand. 2011. University of Toledo, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=toledo1302289201.

    MLA Style (8th edition)

  • Titus, Michael. "Development of Induced Magnetic Field Procedure for Nondestructive Evaluation of Deteriorated Prestressing Strand." Master's thesis, University of Toledo, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1302289201

    Chicago Manual of Style (17th edition)

toledo1302289201
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© 2011, all rights reserved.
This open access ETD is published by University of Toledo and OhioLINK.