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Nondestructive evaluation of materials using an insertedpiezoelectric sensor-correlation with hardness measurements

机译:使用插入式压电传感器对材料进行无损评估-硬度测量

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摘要

Using a one-dimensional model, we show that the analyticalnexpression of the electric impedance of a piezoelectric ceramic isnfunction of the acoustic properties of the medium surrounding it. Thenvalidity of this model is displayed by comparing simulated andnexperimental data. Then, numerical treatments are developed fornprocessing the ceramic electric impedance in order to determine thenacoustic properties of the medium surrounding the ceramic. This methodnis applied to monitor polymerization processes and the validity of thentechnique is shown from the comparison of the results it gives withnthose resulting from traditional Barcol hardness measurements
机译:使用一维模型,我们表明,压电陶瓷电阻抗的解析性与周围介质的声学特性无关。然后通过比较模拟和实验数据来显示该模型的有效性。然后,开发了用于处理陶瓷电阻抗的数值方法,以确定陶瓷周围介质的声学特性。该方法适用于监测聚合过程,并且通过与传统巴氏硬度测量所得的结果进行比较,表明了该技术的有效性。

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