弹性波腔中的电磁瞬发响应
Electromagnetic prompt response in an elastic wave cavity
摘要：
在弹性波散射实验中发现了电磁性质的快速或迅速响应。实验是在距离梁自由端一定距离处开槽的准一维腔体内进行的扭转弹性波实验。在梁的另一端使用被动隔振系统来减少静止模式。共振的测量是用腔体外部的非接触式电磁-声学换能器来执行的。在Argand平面中，每个谐振描述了来自设备的电磁组件的基本阻抗曲线上的圆。一个模型，基于泊松核的变化。理论和实验之间取得了很好的一致性。
英文摘要：
A rapid, or prompt response, of an electromagnetic nature, is found in an elastic wave scattering experiment. The experiment is performed with torsional elastic waves in a quasi-one-dimensional cavity with one port, formed by a notch grooved at a certain distance from the free end of a beam. The stationary patterns are diminished using a passive vibration isolation system at the other end of the beam. The measurement of the resonances is performed with non-contact electromagnetic-acoustic transducers outside the cavity. In the Argand plane, each resonance describes a circle over a base impedance curve which comes from the electromagnetic components of the equipment. A model, based on a variation of Poisson's kernel is developed. Excellent agreement between theory and experiment is obtained.
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