Holographic Study of Rock Specimens Under Uniaxial and Triaxial Loads

1974 ◽  
Author(s):  
J. L. Schmidt ◽  
T. J. Ahrens ◽  
J. D. O'Keefe
Keyword(s):  
Triaxial Loads ◽  
Rock Specimens ◽  
Holographic Study

A method to measure pores and fissures in geologic materials under S.E.M. by digital image processing

1978 ◽  
Vol 36 (1) ◽  
pp. 212-213
Author(s):  
L. Montoto ◽  
M. Montoto ◽  
A. Bel-Lan
Keyword(s):  
Image Processing ◽  
Optical Microscopy ◽  
Digital Image Processing ◽  
Digital Image ◽  
Digital Processing ◽  
Free Surfaces ◽  
Geologic Materials ◽  
Automatic Information ◽  
Detector Output ◽  
Rock Specimens

INTRODUCTION.- The physical properties of rock masses are greatly influenced by their internal discontinuities, like pores and fissures. So, these need to be measured as a basis for interpretation. To avoid the basic difficulties of measurement under optical microscopy and analogic image systems, the authors use S.E.M. and multiband digital image processing. In S.E.M., analog signal processing has been used to further image enhancement (1), but automatic information extraction can be achieved by simple digital processing of S.E.M. images (2). The use of multiband image would overcome difficulties such as artifacts introduced by the relative positions of sample and detector or the typicals encountered in optical microscopy.DIGITAL IMAGE PROCESSING.- The studied rock specimens were in the form of flat deformation-free surfaces observed under a Phillips SEM model 500. The SEM detector output signal was recorded in picture form in b&w negatives and digitized using a Perkin Elmer 1010 MP flat microdensitometer.

Evolution of stress-strain state in structured rock specimens under uniaxial loading

2013 ◽  
Vol 49 (5) ◽  
pp. 677-690 ◽  
Author(s):  
V. N. Oparin ◽  
O. M. Usol’tseva ◽  
V. N. Semenov ◽  
P. A. Tsoi
Keyword(s):  
Strain State ◽  
Uniaxial Loading ◽  
Stress Strain ◽  
Stress Strain State ◽  
Rock Specimens

II.—Further Notes on the Petrography of South Georgia

1916 ◽  
Vol 3 (10) ◽  
pp. 435-441 ◽  
Author(s):  
G. W. Tyrrell
Keyword(s):  
East Coast ◽  
The South ◽  
South Georgia ◽  
South Eastern ◽  
North East ◽  
The North ◽  
New Material ◽  
Rock Specimens

The new material on which this paper is based has lately been received through Mr. D. Ferguson, who recently investigated the geology of the island, and collected the rocks described in an earlier paper. It consists of twenty-seven rock specimens from the south-eastern end of the island, between Cape Disappointment and Cooper Island, and nine specimens from Gold Harbour on the north-east coast between Cooper Island and Royal Bay. All these were collected by the staff of the South Georgia Co., Ltd., under the instructions of Mr. Th. E. Salvesen, managing director, of Leith.

Effect of nonlinear elasticity on loading diagrams of rock specimens

2019 ◽  
Author(s):  
Yu. P. Stefanov ◽  
A. S. Romanov ◽  
R. A. Bakeev
Keyword(s):  
Nonlinear Elasticity ◽  
Rock Specimens
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