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Sensor Concept Based on Piezoelectric PVDF Films for the Structural Health Monitoring of Fatigue Crack Growth
A new sensor concept for monitoring fatigue crack growth in technical structures is presented. It allows the in-situ determination of the position of the crack tip as well as the fracture mechanical quantities. The required data are obtained from a piezoelectric polymer film, which is attached to the surface of the monitored structure. The stress intensity factors and the crack tip position are calculated from electrical potentials obtained from a sensor array by solving the non-linear inverse problem.
CitationIn: Structural Durability & Health Monitoring (SDHM) Vol.7 / No. 1&2 (2011) , S. 1-22 ; EISSN 1930-2991
CollectionsPublikationen (Fachgebiet Kontinuumsmechanik)
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