Dynamic Simulation of Acoustic Wave Propagation and Attenuation in Low-Density Polyethylene by Recursive Convolution Finite-Difference Time-Domain Method

Dynamic Simulation of Acoustic Wave Propagation and Attenuation in Low-Density Polyethylene by Recursive Convolution Finite-Difference Time-Domain Method
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递归卷积时域有限差分法动态模拟声波在低密度聚乙烯中的传播和衰减

DOI:
10.1109/tdei.2022.3216842
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发表时间:
2022
影响因子:
3.1
通讯作者:
and Kazunori Kadowaki
and Kazunori Kadowaki
中科院分区:
工程技术3区
文献类型:
--
作者:
Ryotaro Ozaki;Kizuki Ochi;Shinji Yudate;and Kazunori Kadowaki

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采用递归卷积有限差分法(RC-FDTD)对脉冲电声(PEA)信号进行了动态模拟,根据粘弹性理论计算了低密度聚乙烯(LDPE)的声衰减。这种方法使我们能够定量地分析由声衰减引起的LDPE薄膜中的波形失真。RC-FDTD方法可以很容易地可视化声波在LDPE薄膜中的传播、反射和衰减。此外,还用RC-FDTD方法计算了LDPE薄膜中的衰减空间电荷分布。
The dynamic simulation of pulsed electroacoustic (PEA) signals has been conducted by the recursive convolution finite-difference time-domain (RC-FDTD) method, in which acoustic attenuation in low-density polyethylene (LDPE) is calculated on the basis of viscoelastic theory. This method allows us to quantitatively analyze the distortion of the waveform in an LDPE film resulting from the acoustic attenuation. The RC-FDTD method can easily visualize the propagation, reflection, and attenuation of the acoustic waves in the LDPE film. Furthermore, the attenuated space charge profiles in the LDPE film are also calculated by the RC-FDTD method.
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