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Space Charge Measurement by Electroacoustic Method: Impact of Acoustic Properties of Materials on The Response for Different Geometries

International Journal on Electrical Engineering and Informatics, 2018-12, Vol.10 (4), p.631-647

2018. This work is published under https://creativecommons.org/licenses/by-nd/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;Distributed under a Creative Commons Attribution 4.0 International License ;ISSN: 2085-6830 ;EISSN: 2087-5886 ;DOI: 10.15676/ijeei.2018.10.4.2

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  • Title:
    Space Charge Measurement by Electroacoustic Method: Impact of Acoustic Properties of Materials on The Response for Different Geometries
  • Author: Nga Vu, Thi Thu ; Berquez, Laurent ; Teyssedre, Gilbert
  • Subjects: Acoustic attenuation ; Acoustic properties ; Calibration ; Charge density ; Charge distribution ; Coaxial cables ; Density distribution ; Dependence ; Dielectric properties ; Electric power ; Engineering Sciences ; Geometry ; Impact analysis ; Material properties ; Mechanical properties ; Micrometers ; Multilayers ; Pulsed electroacoustic method ; Space charge ; Temporal resolution ; Thickness
  • Is Part Of: International Journal on Electrical Engineering and Informatics, 2018-12, Vol.10 (4), p.631-647
  • Description: The pulsed electro-acoustic method (PEA) allows dynamic measurements of space charge density distribution with good temporal resolution and is suitable for both flat samples (a few hundred micrometers thickness) and coaxial cable samples. The response obtained by the technique is tributary to the electro-mechanical properties of the materials through which acoustic waves propagate. Hence, when dealing with multilayer dielectrics, the acoustic properties of individual layers are to be taken into account. Also, the acoustic attenuation and dispersion phenomena, especially when dealing with relatively thick samples, affect the space charge resolution at positions far away from the sensor. Therefore, application of a calibration procedure on experimental signals is necessary to recover space charge density profile from PEA raw signals and to provide real results on charge density both on its temporal and spatial dependence. We illustrate here in different samples configurations, spanning from flat samples, multi-layer and cable geometry, how the calibration is achieved and how the acoustic properties of materials impart the response.
  • Publisher: Bandung: School of Electrical Engineering and Informatics, Bandung Institute of Techonolgy, Indonesia
  • Language: English
  • Identifier: ISSN: 2085-6830
    EISSN: 2087-5886
    DOI: 10.15676/ijeei.2018.10.4.2
  • Source: AUTh Library subscriptions: ProQuest Central
    Hyper Article en Ligne (HAL) (Open Access)
    DOAJ Directory of Open Access Journals
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