Crack identification in beam by antiresonant frequencies

Nguyen Tien Khiem, Nguyen Minh Tuan, Pham Thi Ba Lien
Author affiliations

Authors

  • Nguyen Tien Khiem Institute of Mechanics, Vietnam Academy of Science and Technology, Hanoi, Vietnam https://orcid.org/0000-0001-5195-2704
  • Nguyen Minh Tuan Institute of Mechanics, Vietnam Academy of Science and Technology, Hanoi, Vietnam
  • Pham Thi Ba Lien University of Transport and Communications, Cau Giay, Hanoi, Vietnam

DOI:

https://doi.org/10.15625/0866-7136/16710

Keywords:

cracked beam, antiresonant frequency, crack identification

Abstract

The present paper deals with the concept of antiresonance in multiple cracked beams and application for multi-crack identification. First, governing equations for antiresonant frequency are conducted and used for both computing antiresonant frequencies versus crack parameters and measuring-loading colocation and identifying cracks by measured antiresonant frequencies. Then, a procedure is proposed for crack identification in cantilever beam by antiresonant frequencies based on the so-called crack scanning method. Theoretical development is illustrated by numerical examples.

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Published

20-12-2021

Issue

Vol. 43 No. 4 (2021)

Section

Research Article

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This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

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