Detection of cracks from modal test data using a system identification approach

Tai-Yan Kam, T. Y. Lee

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A method for identifying a crack in a structure using vibration test data is presented. In the identification process, the cracked structure is discretized into a number of elements. The location of the crack is identified through the determination of the sectional parameters of the elements using a statistical identification technique. The crack size is estimated based on an energy approach in which strain energies of the structure with or without a crack are derived from test data and used to construct an energy balance equation for crack size identification. Examples of crack detection of beam structures are given to demonstrate the applications of the proposed method.

Original languageEnglish
Title of host publicationSingapore International Conference on Intelligent Control and Instrumentation - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages934-939
Number of pages6
ISBN (Electronic)0780306325, 9780780306325
DOIs
StatePublished - 1 Jan 1992
Event1992 Singapore International Conference on Intelligent Control and Instrumentation - Singapore, Singapore
Duration: 17 Feb 199221 Feb 1992

Publication series

NameSingapore International Conference on Intelligent Control and Instrumentation - Proceedings
Volume2

Conference

Conference1992 Singapore International Conference on Intelligent Control and Instrumentation
CountrySingapore
CitySingapore
Period17/02/9221/02/92

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