Accession Number : ADD002989

Title :   Plural Electrode System for Determining the Electrical Parameters of Large Samples of Materials in Situ.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Bliamptis,Emmanuel E

Report Date : 17 Aug 1976

Pagination or Media Count : 7

Abstract : The patent describes a system and method for determining the electrical parameters of large samples of materials in situ. A set of linear electrodes in boreholes forms a square pattern; positive and negative electrical potentials on alternate electrodes create symmetry planes which define several 'cells'; a given fraction of electrical current leaves an electrode and reaches a corresponding electrode; and an impedance characteristic is determined for each cell. The presence of inhomogeneity and anisotropy is reflected by unequal currents in geometrically equivalent cells.

Descriptors :   *Geophysical prospecting, *Patents, Arrays, Electrodes, Boreholes, Electrical properties, Materials, Rock, Soil tests, Test equipment, Test and evaluation

Subject Categories : Mining Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE