Some Applications of Electromechanical Impedance Technology for SHM

11th European Conference on Non-Destructive Testing (ECNDT 2014): Proceedings 2014
Vitālijs Pavelko, Sergejs Kuzņecovs, Ilmārs Ozoliņš, Igors Pavelko

The paper focuses on the further development of the model of the electromechanical impedance (EMI) of the piezoceramics transducer (PZT) and its application for aircraft structural health monitoring (SHM). The opportunities of new model of any dimension (1D, 2D, 3D), and independence from host structure specific shape and constraints are discussed. Determination of the dynamic response of the system "host structure - PZT", which is crucial for the practical application supposes the use of modal analysis. The use of models for the free and constrained transducer is demonstrated. In all cases there was analyzed the influence of the dimension of the model (2D and 3D). The validity of the model is confirmed by experimental studies. Correlation between the fatigue crack length in a thin-walled Al plate and EMI of embedded PZT was simulated and compared with test result.

Keywords
electromechanical impedance, aircraft structural health monitoring, dynamic response, modal

Pavelko, V., Kuzņecovs, S., Ozoliņš, I., Pavelko, I. Some Applications of Electromechanical Impedance Technology for SHM. In: 11th European Conference on Non-Destructive Testing (ECNDT 2014): Proceedings, Czech Republic, Prague, 6-10 October, 2014. Prague: Brno University of Tachnology, 2014, pp.1-10. ISBN 978-80-214-5018-9.

Publication language
English (en)