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Conference and Exhibition on Non Destructive Evaluation

NDE 2020: Advances in Non Destructive Evaluation pp 145–157Cite as

An Enhanced Vibration-Based Damage Diagnostic Strategy Under Changing Environmental Conditions

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Part of the Lecture Notes in Mechanical Engineering book series (LNME)

Abstract

In this paper, an enhanced vibration-based damage diagnostic approach for the identification of subtle cracks under changing environmental conditions is proposed using modal parameters. The ratio of the frequency of the damaged structure to the undamaged structure between the two modes is proposed as a damage-sensitive feature for damage detection. Besides, the proposed work uses the traditional mode shape difference-based index integrated with Katz Fractal Dimension as a damage localization index to find the geometric location of damage present anywhere in the structure. The values of the damage localization index are related to the severity of the damage. Numerical studies performed on simple beam-like structures validated the capability of the proposed technique in identifying subtle damages even using noisy measurements.

Keywords

  • Structural health monitoring
  • Damage localization
  • Mode shapes
  • Sinha crack model
  • Katz fractal dimension

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  • DOI: 10.1007/978-981-16-9093-8_12
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Author information

Authors and Affiliations

  1. Structural Engineering, JNTUK, Kakinada, Andhra Pradesh, India

    V. Sri Harika

  2. CSIR-Structural Engineering Research Centre, Chennai, Tamil Nadu, India

    J. Prawin

Authors
  1. V. Sri Harika
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  2. J. Prawin
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Corresponding author

Correspondence to V. Sri Harika .

Editor information

Editors and Affiliations

  1. Azeriri Pvt Ltd and Teralumen Solutions Pvt Ltd, Chennai, India

    Dr. Shyamsunder Mandayam

  2. National Metallurgical Laboratory, CSIR, Jamshedpur, India

    Dr. Sarmishtha Palit Sagar

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© 2022 Indian Society for Non-destructive Testing

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Sri Harika, V., Prawin, J. (2022). An Enhanced Vibration-Based Damage Diagnostic Strategy Under Changing Environmental Conditions. In: Mandayam, S., Sagar, S.P. (eds) Advances in Non Destructive Evaluation. NDE 2020. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-16-9093-8_12

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  • DOI: https://doi.org/10.1007/978-981-16-9093-8_12

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-16-9092-1

  • Online ISBN: 978-981-16-9093-8

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