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Damage detection in submerged plates using ultrasonic guided waves

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Abstract

This paper describes a non-contact and non-invasive health monitoring strategy for submerged plate structures using guided waves. The structure under consideration is immersed in water and subjected to longitudinal ultrasonic waves at specific angles of incidence using a cylindrical piezoelectric transducer using the surrounding water as coupling medium. Suitable ultrasonic guided wave modes with optimum scanning capabilities have been generated and identified in submerged plate system. Finally, the propagation of selected modes through submerged notched plates is investigated. Sensitivity of leaky waves to the notches has been studied. The methodology would help in identifying damages in the submerged plate structures.

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Acknowledgements

The fund received from the Naval Research Board, Defence Research Development Organization (DRDO), Government of India is gratefully acknowledged. Dr Tribikram Kundu, Professor, Department of Civil Engineering and Engineering Mechanics, University of Arizona, Tucson, USA visited the health monitoring laboratory in Thapar University on an National Science Foundation Department of Science and Technology (NSF-DST) grant. The authors acknowledge his advice on the study.

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Authors and Affiliations

  1. Mechanical Engineering Department, Thapar University, Patiala, 147 004, India

    SANDEEP SHARMA

  2. Department of Civil Engineering, Curtin University, Bentley, Western Australia, 6102, Australia

    ABHIJIT MUKHERJEE

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  1. SANDEEP SHARMA
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  2. ABHIJIT MUKHERJEE
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Correspondence to SANDEEP SHARMA.

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SHARMA, S., MUKHERJEE, A. Damage detection in submerged plates using ultrasonic guided waves. Sadhana 39, 1009–1034 (2014). https://doi.org/10.1007/s12046-014-0255-4

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  • DOI: https://doi.org/10.1007/s12046-014-0255-4

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