Fault detection via eigenmode identification

James Lew, Martin Egger

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

Abstract

Vibration methods are employed in the detection of defects in thermal insulation bricks. The technique presented in this paper concentrates on identifying the different vibration eigenmodes of the bricks. Finite element analysis and experimental results are in good agreement. They show that a horizontal crack in the bricks can shift the frequencies and the order of the eigenmodes. A likely candidate of an indicator of this defect is the sequence position of the "+ + +" extension eigenmode mode. A possible approach to the development of a detection system is proposed based on these results.

Original languageEnglish
Title of host publication12th International Congress on Sound and Vibration 2005, ICSV 2005
Pages1899-1906
Number of pages8
Publication statusPublished - 2005
Event12th International Congress on Sound and Vibration 2005, ICSV 2005 - Lisbon, Portugal
Duration: 11 Jul 200514 Jul 2005

Publication series

Name12th International Congress on Sound and Vibration 2005, ICSV 2005
Volume3

Conference

Conference12th International Congress on Sound and Vibration 2005, ICSV 2005
CountryPortugal
CityLisbon
Period11.07.200514.07.2005

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