scholarly journals Prototype of a measurement device for frequency dependent soil electrical properties

2019 ◽  
Vol 302 ◽  
pp. 012065 ◽  
Author(s):  
D Kuklin
Keyword(s):  
Electrical Properties ◽  
Measurement Device ◽  
Frequency Dependent

scholarly journals Manufacture and characterization of conductor-insulator composites based on carbon nanotubes and thermally reduced graphene oxide

2014 ◽  
Vol 86 (5) ◽  
pp. 765-774 ◽  
Author(s):  
Chris R. Bowen ◽  
Sam Buschhorn ◽  
Vana Adamaki
Keyword(s):  
Graphene Oxide ◽  
Electrical Properties ◽  
Reduced Graphene Oxide ◽  
Volume Fraction ◽  
Epoxy Composites ◽  
Frequency Dependent ◽  
Reduced Graphene ◽  
Electrical Conductivities ◽  
Conductive Component

AbstractIn this paper we present characterization data for carbon nanotube (CNT)-epoxy and thermally reduced graphene oxide (TRGO)-epoxy nano-composites. The frequency-dependent ac conductivity and permittivity are examined as a function of volume fraction of carbon-based filler. The measured electrical properties and their frequency dependency are evaluated on the basis that such composites can be considered as a network of resistors and capacitors, whereby the resistors represent the conductive component (CNT or TRGO) and the capacitors are the insulating component (epoxy matrix). Differences observed between the frequency-dependent electrical properties of the CNT-epoxy and TRGO-epoxy composites are explained in terms of the different electrical conductivities of the CNT and TRGO phase.

Integration of Frequency Dependent Soil Electrical Properties in Grounding Electrode Circuit Model

2016 ◽  
Vol 6 (2) ◽  
pp. 792 ◽  
Author(s):  
Mehrdad Mokhtari ◽  
Zulkurnain Abdul-Malek ◽  
Chin Leong Wooi
Keyword(s):  
Electrical Properties ◽  
Soil Properties ◽  
Excellent Agreement ◽  
Transient Response ◽  
Circuit Model ◽  
Frequency Dependent ◽  
Novel Method ◽  
Grounding Electrode ◽  
Electromagnetic Models ◽  
Wave Shapes

<span>The effect of frequency dependent soil properties on the impedance and transient response of the grounding electrode was investigated. The frequency dependent soil models as proposed by Scott, Smith-Longmire, and Visacro-Alipio were critically reviewed. A novel method was proposed to integrate the frequency dependent soil electrical properties in the circuit model of grounding electrode. To validate the application of the method in circuit model, the voltage responses of the grounding electrode obtained by the circuit and electromagnetic models were compared. The voltage responses obtained by the circuit and electromagnetic models were in excellent agreement in terms of voltage peaks and wave shapes. The differences between voltage peaks obtained by the circuit and electromagnetic models were found less than 1%.</span>

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