Simplified models for the location of cracks in beam structures using measured vibration data

JK Sinha, MI Friswell, S Edwards

Research output: Contribution to journalArticle (Academic Journal)peer-review

325 Citations (Scopus)

Abstract

A new simplified approach to modeling cracks in beams undergoing transverse vibration is presented. The modeling approach uses Euler-Bernoulli beam elements with small modifications to the local flexibility in the vicinity of cracks. This crack model is then used to estimate the crack locations and sizes, by minimizing the difference between the measured and predicted natural frequencies via model updating. The uniqueness of the approach is that the simplified crack model allows the location and damage extent to be estimated directly. The simplified crack model may also be used to generate training data for pattern recognition approaches to health monitoring. The proposed method has been illustrated using experimental data on beam examples.
Translated title of the contributionSimplified models for the location of cracks in beam structures using measured vibration data
Original languageEnglish
Pages (from-to)13 - 38
Number of pages26
JournalJournal of Sound and Vibration
Volume251 (1)
DOIs
Publication statusPublished - Mar 2002

Bibliographical note

Publisher: Elsevier

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