Development and Optimization of a Pulsed Electroacoustic System with Temperature Controlled Electrodes
This work presents the important steps in developing and optimizing a Pulsed Electroacoustic (PEA) system. The aim is to investigate silicone rubbers (LSR) with different amount of nanofillers. Therefore, the influence of the nanofillers on the acoustic behavior such as the acoustic impedance and the speed of sound are investigated. A detailed description of the acoustic detection unit is provided. To allow the measurement at different absolute temperatures and also at temperature gradients the electrodes are temperature controlled. Reference measurements are performed to give a better and more accurate temperature profile estimation inside the samples. The influence of temperature on the attenuation and dispersion factors of different LSR samples is outlined. A final procedure for signal processing is presented to determine the correct space charge distribution.
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