Shared more. Cited more. Safe forever.
    • advanced search
    • submit works
    • about
    • help
    • contact us
    • login
    View Item 
    •   MOspace Home
    • University of Missouri-Columbia
    • Graduate School - MU Theses and Dissertations (MU)
    • Theses and Dissertations (MU)
    • Theses (MU)
    • 2008 Theses (MU)
    • 2008 MU theses - Freely available online
    • View Item
    •   MOspace Home
    • University of Missouri-Columbia
    • Graduate School - MU Theses and Dissertations (MU)
    • Theses and Dissertations (MU)
    • Theses (MU)
    • 2008 Theses (MU)
    • 2008 MU theses - Freely available online
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.
    advanced searchsubmit worksabouthelpcontact us

    Browse

    All of MOspaceCommunities & CollectionsDate IssuedAuthor/ContributorTitleIdentifierThesis DepartmentThesis AdvisorThesis SemesterThis CollectionDate IssuedAuthor/ContributorTitleIdentifierThesis DepartmentThesis AdvisorThesis Semester

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular AuthorsStatistics by Referrer

    Optimization of electromagnetic acoustic transducers for nondestructive evaluation of concrete structures

    Penamakuru, Siva Krishna Chaitanya
    View/Open
    [PDF] public.pdf (2.024Kb)
    [PDF] short.pdf (9.050Kb)
    [PDF] research.pdf (1.069Mb)
    Date
    2008
    Format
    Thesis
    Metadata
    [+] Show full item record
    Abstract
    There are more than 130,000 prestressed concrete bridges in the United States with about 37,000 bridges being more than 30 years old. Prestressing steel strands are an important construction element used in these bridges and are critical to their performance. Presently there is no effective inspection/Nondestructive Evaluation (NDE) technology for condition assessment of these prestressing strands once they are embedded in concrete. The overall goal of the research is to develop a sensor technology to detect deterioration in embedded steel strands in concrete structures. The sensor technology to be developed is an Electromagnetic Acoustic transducer (EMAT) based on the Magnetostriction effect or Joule effect. The objective of this part of the research is to maximize the efficiency of an EMAT by optimizing its design parameters in order to overcome the limitation of significant wave attenuation and low level signals that is characteristic of these sensors when embedded in concrete. Ultrasonic measurements were made in order to maximize the efficiency of EMAT by considering the influence of modifying three parameters; bias magnetic field, number of coil turns and the number of coils.
    URI
    https://doi.org/10.32469/10355/5706
    https://hdl.handle.net/10355/5706
    Degree
    M.S.
    Thesis Department
    Mechanical and aerospace engineering (MU)
    Rights
    OpenAccess.
    This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License.
    Collections
    • 2008 MU theses - Freely available online
    • Mechanical and Aerospace Engineering electronic theses and dissertations (MU)

    Send Feedback
    hosted by University of Missouri Library Systems
     

     


    Send Feedback
    hosted by University of Missouri Library Systems