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.
@article{doi:10.17170/kobra-202010262005,
author ={Bäcker, Dennis and Ricoeur, Andreas and Kuna, Meinhard},
title ={Sensor Concept Based on Piezoelectric PVDF Films for the Structural Health Monitoring of Fatigue Crack Growth},
keywords ={620 and Werkstoff and Ermüdung and Ermüdungsriss and Polyvinylidenfluorid},
copyright ={http://creativecommons.org/licenses/by/4.0/},
language ={en},
journal ={Structural Durability & Health Monitoring (SDHM)},
year ={2011}
}