Influence of support conditions and temperature on the EMI characteristics

11th International Conference on Damage Assessment of Structures

物理学;材料科学

Stancalie, A.^1,2 ; Sporea, D.^1 ; Malinowski, P.^3 ; Mieloszyk, M.^3 ; Opoka, S.^3 ; Wandowski, T.^3 ; Ostachowicz, W.^3

Laser Metrology and Standardization Laboratory, National Institute for Laser, Plasma and Radiation Physics, Magurele -Ilfov, Romania^1

University 'Politehnica' of Bucharest, Faculty of Applied Sciences, Splaiul Independentei 303, 060042, Romania^2

Mechanics of Intelligent Structures Department, Institute of Fluid-Flow Machinery, Polish Academy of Sciences, Gdansk, Poland^3

关键词: Dynamic characteristics;    Electrical impedance;    Electrical parameter;    Electromechanical impedance;    Impedance measurement;    Measurement process;    Temperature changes;    Temperature variation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/628/1/012112/pdf
DOI  :  10.1088/1742-6596/628/1/012112

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The present work reports results from an extensive set of measurements which has been performed in order to formulate standard method to remove temperature changes from impedance measurements. The other issue addressed here is the investigation of influence of boundary condition and temperature changes on electromechanical impedance measurement for structural member. Due to electromechanical coupling, changes in dynamic characteristics can be seen in electrical impedance of piezoelectric transducer. Two different systems have been used during this measurement process. System based on FBG sensors has been used for temperature changes measurement while PZT transducers mounted on the structure with impedance analyser were used for electrical parameters measurement. During research electrical impedance and resistance of piezoelectric transducer were measured in order to analyze changes in amplitude of peaks and the frequency shift of peaks due to temperature variations and different configurations of the beam.