A high resolution health monitoring system for bonded composite repairs using a spatially sparse fiber bragg grating sensor net

I. Kressel, Y. Botsev, U. Ben-Simon, A. K. Green, N. Gorbatov, H. Leibovich, G. Ghilai, S. Gali, M. Tur

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

Abstract

A Real time airworthiness assessment system for bonded composite repairs to cracked metallic structure is proposed and demonstrated. Patch debonding and crack propagation rates are monitored using a low spatial resolution Fiber-Bragg-Grating (FBG) sensor net, embedded in a co-cured composite patch. The FBG sensor net tracks changes in the strain field induced in the composite patch by the growing defects. By correlating these strain measurements with a numerical model, this sensing concept was able to identify and track patch debonding and crack propagation in real time with the required spatial resolution, which was much better than that of the sensor net.

Original languageEnglish
Title of host publicationProceedings of the 3rd European Workshop - Structural Health Monitoring 2006
Pages207-211
Number of pages5
StatePublished - 2006
Event3rd European Workshop on Structural Health Monitoring 2006 - Granada, Spain
Duration: 5 Jul 20067 Jul 2006

Publication series

NameProceedings of the 3rd European Workshop - Structural Health Monitoring 2006

Conference

Conference3rd European Workshop on Structural Health Monitoring 2006
Country/TerritorySpain
CityGranada
Period5/07/067/07/06

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