NDLI: A new method for determining the physical parameters of large soil and rock samples in situ

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A new method for determining the physical parameters of large soil and rock samples in situ

Content Provider	HathiTrust Digital Library
Author	Bliamptis, Emmanuel E
Editor	Emmanuel E. Bliamptis
Organization	Air Force Cambridge Research Laboratories (U.S.)
Description	A new method is introduced for determining the electrical and mechanical 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 electric current leaves an electrode and reaches a corresponding electrode. It is thus possible to obtain an impedance characteristic for each cell. The situation is basically two-dimensional, so a Schwarz-Christoffel transformation may be used followed with electrical calculations to obtain the conductivity and the permittivity of the cell material. The mechanical parameters of the cells are obtained in a similar manner. A mechanical disturbance is generated in the central borehole and the travel time to the other boreholes is measured along with the attenuation. The mechanical parameters are computed and correlated with the electrical parameters. (Author Modified Abstract)
Volume Number	72-734
Volume Number	425
Language	English
Publisher	L.G. Hanscom Field, Bedford, Massachusetts : Air Force Cambridge Research Laboratories, Office of Aerospace Research, United States Air Force, 1972
Publisher Date	1972-01-01
Access Restriction	Open
Rights License	Items in this record are available as Public Domain, Google-digitized. View the access and use profile at http://www.hathitrust.org/access_use#pd-google. Please see individual items for rights and use statements
Subject Keyword	Testing Soil mechanics Rocks Rock mechanics Correlation (Statistics)
Content Type	Text
Resource Type	Book

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