Menu
Search
Filters
Close
Menu

Celebrate World Corrosion Awareness Day with 20% off eCourses and eBooks with code WCAD2024 at checkout!

51314-3743-Methodological Approach to the Average Potential Method to Obtain a Generalized Equation for the Resistance of Vertical Electrodes-II

Picture for Methodological Approach to the Average Potential Method to Obtain a Generalized Equation for the Res
Available for download
Product Number: 51314-3743-SG
ISBN: 3743 2014 CP
Author: Rogelio de las Casas
Publication Date: 2014
$0.00
$0.00
$0.00
Erling D. Sunde obtained an equation for the resistance of vertical electrodes underground in a groundbed configuration. In his approach he regarded that the top of the electrode was at the earth surface. Sunde used the Average Potential Method (APM) and the method of images to obtain this equation; where all the anodes have the same length.W. Von Baeckmann et al also presented an equation for vertical electrodes where the distance from the top of the electrode to the ground surface is taken into account. They also consider that all the vertical electrodes have the same length and the distance from top of the electrode to soil is a non-zero constant value for all the electrodes.In this paper we are obtaining a generalized equation for vertical electrodes where the APM in a matrix form is used and the final equation will contain Sunde’s equation as particular case. This new approach regards dissimilar length of anodes and dissimilar distance from the top of the anodes to soil surface.The average potential method calculate the potential of the electrode to remote earth regarding uniformity of current distribution on the electrode axis averaging the potential value at a point in the electrode surface over the entire electrode length through an integration process. The influence of parallel electrodes is also included with an integral-matrix approximation as interference factor that increases the total groundbed resistance.Keywords: vertical groundbed resistance equation potential theory interference factor between vertical electrodes cathodic protection design.
Erling D. Sunde obtained an equation for the resistance of vertical electrodes underground in a groundbed configuration. In his approach he regarded that the top of the electrode was at the earth surface. Sunde used the Average Potential Method (APM) and the method of images to obtain this equation; where all the anodes have the same length.W. Von Baeckmann et al also presented an equation for vertical electrodes where the distance from the top of the electrode to the ground surface is taken into account. They also consider that all the vertical electrodes have the same length and the distance from top of the electrode to soil is a non-zero constant value for all the electrodes.In this paper we are obtaining a generalized equation for vertical electrodes where the APM in a matrix form is used and the final equation will contain Sunde’s equation as particular case. This new approach regards dissimilar length of anodes and dissimilar distance from the top of the anodes to soil surface.The average potential method calculate the potential of the electrode to remote earth regarding uniformity of current distribution on the electrode axis averaging the potential value at a point in the electrode surface over the entire electrode length through an integration process. The influence of parallel electrodes is also included with an integral-matrix approximation as interference factor that increases the total groundbed resistance.Keywords: vertical groundbed resistance equation potential theory interference factor between vertical electrodes cathodic protection design.
Product tags
Also Purchased
Picture for 09543 New Earth Potential Equations and Applications
Available for download

09543 New Earth Potential Equations and Applications

Product Number: 51300-09543-SG
ISBN: 09543 2009 CP
Author: Rogelio De las Casas
Publication Date: 2009
$20.00
Picture for 10026 Resistance Equation for Multiple Horizontal Anode Groundbed
Available for download

10026 Resistance Equation for Multiple Horizontal Anode Groundbed

Product Number: 51300-10026-SG
ISBN: 10026 2010 CP
Author: Rogelio de las Casas
Publication Date: 2010
$20.00

Analysis of the Sunde’s equation for multiple electrodes in horizontal configurationsis done in order to show that this equation cannot be used in the case of typical cathodic protection design. An accurate approach to horizontal anode groundbed design and understanding of the theory behind groundbed resistance equations.
Picture for Pipeline Corrosion Management; a Compendium
Available for download

51314-3723-Pipeline Corrosion Management; a Compendium

Product Number: 51314-3723-SG
ISBN: 3723 2014 CP
Author: Bijan Kermani
Publication Date: 2014
$0.00

This paper summarizes major elements of a recent recommended practice (RP) on Pipeline Corrosion Management (PCM) published by the European Federation of Corrosion (EFC). The RP goes into details on a methodical approach to carrying out PCM.
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support