Strain gauge capabilities in crack detection

Jarkko Tikka, Risto Hedman, Aslak Siljander

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

16 Citations (Scopus)

Abstract

Part of the structural inspections done to modern military aircraft can be technically replaced by automatic structural health monitoring systems (SHMS). One option for the system’s sensor is traditional strain gauge, whose capabilities in structural damage detection were evaluated. A series of finite element analysis were done according to different damage cases in order to predict the output of strain gauge in crack affected area. Results from two fatigue tests have been used to test the strain gauge and prediction tool capabilities in real structural damage cases. The experience gained showed noteworthy potential for the strain gauge based SHMS to be further developed into a flying prototype, as the formation and growth of fatigue cracks could be detected early enough in view of maintaining the flight safety. Biggest problems to be solved are in areas of damage size classification.
Original languageEnglish
Title of host publicationStructural Health Monitoring 2003: From Diagnosis & Prognostics to Structural Health Management
Subtitle of host publicationProceedings of the 4th International Workshop on Structural Health Monitoring
PublisherDEStech Publications Inc.
Number of pages8
ISBN (Print)1-932078-20-7
Publication statusPublished - 2003
MoE publication typeA4 Article in a conference publication
Event4th International Workshop on Structural Health Monitoring - Stanford, United States
Duration: 15 Sep 200317 Sep 2003

Conference

Conference4th International Workshop on Structural Health Monitoring
CountryUnited States
CityStanford
Period15/09/0317/09/03

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    Tikka, J., Hedman, R., & Siljander, A. (2003). Strain gauge capabilities in crack detection. In Structural Health Monitoring 2003: From Diagnosis & Prognostics to Structural Health Management : Proceedings of the 4th International Workshop on Structural Health Monitoring DEStech Publications Inc.. http://www.vtt.fi/inf/julkaisut/muut/2003/iwshm2003_crackdetection.pdf