Volume 43, Issue 4 (July 2015)

    A Non-Contact Technique for Damage Monitoring in Submerged Plates Using Guided Waves

    (Received 13 December 2012; accepted 24 March 2014)

    Published Online: 2014

    CODEN: JTEOAD

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    Abstract

    This paper discusses a non-contact and in situ damage-monitoring methodology in submerged plates using ultrasonic guided waves. Specific Lamb wave modes sensitive to near-surface and sub-surface damages have been identified. These modes are further utilized for non-contact scanning of the plates to identify the presence, as well as extent, of damage. Effective combination of specific Lamb wave modes leads to comprehensive inspection of the submerged plate structures. The developed methodology is successfully applied for monitoring notches and corrosion in plate. The data generated from scanning the plates have been pictorially represented in the form of defect maps.


    Author Information:

    Sharma, Sandeep
    Mechanical Engineering Dept., Thapar Univ., Patiala,

    Mukherjee, Abhijit
    Department of Civil Engineering, Curtin University, Bentley, Western Australia,


    Stock #: JTE20120357

    ISSN: 0090-3973

    DOI: 10.1520/JTE20120357

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    Author
    Title A Non-Contact Technique for Damage Monitoring in Submerged Plates Using Guided Waves
    Symposium , 0000-00-00
    Committee E07