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Electro-mechanical impedance and its variations, measured with piezo-sensors as a function of frequency, indicate the conditions and changes in the structures of materials and can be used for structural health monitoring. Available impedance measurement solutions have very limited features and performance or are bulky and costly and not supporting real-time monitoring of the dynamics of impedance...
Impedance spectroscopy is widely used in various test& measurement fields and applications. In current paper a novel approach of excitation with chirp signal with simple time-domain analysis of response signal for such task is introduced and described with examples of measurement of the electro-mechanical impedance of piezo-sensors, in the frequency range of several hundred kiloherz. In one approach...
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