Investigation of the strain inhomogeneity of ZrO2-(Y2O3) during Brazilian test

2019 ◽  
Author(s):  
T. Yu. Sablina ◽  
I. N. Sevostyanova ◽  
V. V. Gorbatenko ◽  
L. N. Ryzhova ◽  
L. M. Molchunova ◽  
...  
Keyword(s):  
Brazilian Test ◽  
Strain Inhomogeneity

Investigation of the strain inhomogeneity in ZrO2-(Y2O3) porous ceramics under “Brazilian” test

2020 ◽  
Author(s):  
T. Yu. Sablina ◽  
I. N. Sevostyanova ◽  
V. V. Gorbatenko ◽  
L. N. Ryzhova ◽  
S. N. Kulkov
Keyword(s):  
Porous Ceramics ◽  
Brazilian Test ◽  
Strain Inhomogeneity

Strain-inhomogeneity effect on magnetization and low-temperature resistivity of epitaxial Fe(001) thin films

2004 ◽  
Vol 268 (1-2) ◽  
pp. 24-28 ◽  
Author(s):  
Z. Sefrioui ◽  
J.L. Menéndez ◽  
A. Cebollada ◽  
F. Briones ◽  
A. Hernando
Keyword(s):  
Thin Films ◽  
Low Temperature ◽  
Strain Inhomogeneity ◽  
Temperature Resistivity

The Brazilian Reliability Test and Micromechanical Modelling for Channelled Cylinders of Multiphased Porous Ceramics

2007 ◽  
Vol 280-283 ◽  
pp. 1731-1738 ◽  
Author(s):  
Frédéric Osterstock ◽  
Ioannis St. Doltsinis ◽  
Olivier Vansse
Keyword(s):  
Mechanical Model ◽  
Weibull Modulus ◽  
Porous Ceramics ◽  
Brazilian Test ◽  
Micromechanical Modelling ◽  
Multimodal Distributions ◽  
The Mean ◽  
Model Structures ◽  
Good Homogeneity ◽  
Equal Thickness

Channelled hollow ceramic cylinders have been sliced into discs of equal thickness and submitted to an adapted diametral compression, or brazilian, test such as to evaluate their reliability. The mean Weibull modulus, of m » 18, is representative of a rather good homogeneity of the ceramic material. The shapes of the distributions reveal a probable multimodality. This is analyzed in superimposing possible unimodal distributions of given characteristic value, Weibull modulus and number of items, and comparing to the experimental plot. Iterative modifications are made until a convincing superposition is attained. Complementary numerical simulations on “thermomechanically equivalent microstructures” have been created on the computer observing actual stereological data. The micro-mechanical model accounts for cracking of grain interfaces until specimen separation. Weibull plots for model structures under pore pressure suggest multimodal distributions with moduli ranging as in the measurements. The larger scatter at higher rupture pressures may indicate a varying degree of quasi-brittleness.

Rock fracture-toughness determination by the Brazilian test

1993 ◽  
Vol 33 (3) ◽  
pp. 177-188 ◽  
Author(s):  
H. Guo ◽  
N.I. Aziz ◽  
L.C. Schmidt
Keyword(s):  
Fracture Toughness ◽  
Rock Fracture ◽  
Brazilian Test ◽  
Rock Fracture Toughness

The mechanical behavior of the Kettle Point oil shale

1986 ◽  
Vol 23 (1) ◽  
pp. 87-93 ◽  
Author(s):  
Maurice B. Dusseault ◽  
Matthias Loftsson ◽  
David Russell
Keyword(s):  
Oil Shale ◽  
Clay Content ◽  
Organic Content ◽  
Point Load ◽  
Brazilian Test ◽  
Point Load Strength ◽  
Triaxial Strength ◽  
Deformation Properties ◽  
Strength And Deformation ◽  
Oil Shales

Samples of eastern black shale (Kettle Point oil shales, Ontario) were subjected to extensive mineralogical and geomechanical tests. We prove that the mineralogy, as measured by the ratio of quartz to illite, controls strength and deformation properties, and the organic material plays no significant role. The reason is that increasing clay content dilutes the rigid quartz–quartz grain contacts that are responsible for the high strengths and stiff behavior. Tests of temperature effects on point load strength of another low organic content oil shale confirm that organic matter is not important to mechanical properties in matrix-supported shales. Key words: shale, mineralogy, Brazilian test, triaxial strength, organic content, slake durability, thermogravimetry.

scholarly journals CURRENT COGNITION OF ROCK TENSILE STRENGTH TESTING BY BRAZILIAN TEST

2015 ◽  
Vol 30 (2) ◽  
pp. 101-114 ◽  
Author(s):  
Zlatko Briševac ◽  
◽  
Trpimir Kujundžić ◽  
Sandi Čajić ◽  
◽  
...  
Keyword(s):  
Tensile Strength ◽  
Brazilian Test ◽  
Strength Testing

Damage Observation and Analysis of a Rock Brazilian Disc Using High-Speed DIC Method

2011 ◽  
Vol 70 ◽  
pp. 87-92 ◽  
Author(s):  
Shao Peng Ma ◽  
Dong Yan ◽  
Xian Wang ◽  
Yan Yan Cao
Keyword(s):  
Strain Field ◽  
Damage Evolution ◽  
High Speed ◽  
Failure Process ◽  
Tensile Load ◽  
Brazilian Test ◽  
Elastic Model ◽  
Strain Fields ◽  
Brazilian Disc ◽  
Damage And Failure

Observation of damage evolution is of great importance to the understanding of the failure process of rock materials. High-speed DIC system is constructed and used to observe the strain field evolution of the granodiorite disc in Brazilian test. The strain fields at different load levels are analyzed based on the stain abnormality indicator (SAI) which is the ratio of the strain measured in experiment to the strain from theoretical solution in an isotropy and elastic model. SAI could be used to indicate the damage in the specimen. The process of damage and failure of the specimen in Brazilian disc test is quantitatively analyzed and deeply discussed according to the strain fields and the statistics of SAI. Experimental results in this paper show that the failure process of the disc specimen in Brazilian test is not simple crack propagation under tensile load, but a complicated damage evolution procedure.

Effects of Thermal Treatment on Tensile Strength of Laurentian Granite Using Brazilian Test

2015 ◽  
Vol 48 (6) ◽  
pp. 2213-2223 ◽  
Author(s):  
Tubing Yin ◽  
Xibing Li ◽  
Wenzhuo Cao ◽  
Kaiwen Xia
Keyword(s):  
Tensile Strength ◽  
Thermal Treatment ◽  
Brazilian Test
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