Laboratory Study on the Mechanical Behavior of Tire Chip-Sand Mixture

2006 ◽  
Author(s):  
Thomas M. H. Lok ◽  
H. J. Yu
Keyword(s):  
Mechanical Behavior ◽  
Laboratory Study ◽  
Sand Mixture

Mechanical behavior of posterior all-ceramic hybrid-abutment-crowns versus hybrid-abutments with separate crowns-A laboratory study

2018 ◽  
Vol 30 (1) ◽  
pp. 90-98 ◽  
Author(s):  
Ingy Nouh ◽  
Matthias Kern ◽  
Ahmed E. Sabet ◽  
Ahmad K. Aboelfadl ◽  
Amina M. Hamdy ◽  
...  
Keyword(s):  
Mechanical Behavior ◽  
Laboratory Study ◽  
All Ceramic

scholarly journals Laboratory study and interpretation of mechanical behavior of frozen clay through state concept

2017 ◽  
Vol 57 (2) ◽  
pp. 194-210 ◽  
Author(s):  
Jinyuan Wang ◽  
Satoshi Nishimura ◽  
Tetsuya Tokoro
Keyword(s):  
Mechanical Behavior ◽  
Laboratory Study ◽  
Frozen Clay

A Laboratory Study of Two Straddle-Packer Systems Under Simulated Hydrofrac Stress-Measurement Conditions

1987 ◽  
Vol 109 (4) ◽  
pp. 180-190 ◽  
Author(s):  
K. Evans
Keyword(s):  
Mechanical Behavior ◽  
Laboratory Study ◽  
Stress Measurement ◽  
The Other ◽  
Strain Gages ◽  
Ideal Behavior ◽  
Coupling System ◽  
Two Systems ◽  
End To End ◽  
Maximum Interval

The mechanical behavior of two straddle-packer systems subjected to pressure histories which replicated hydrofracture stress-measurement procedures has been investigated. The systems were pressurized in borehole simulators consisting of lengths of steel casing instrumented with strain gages. From the strain histories, the stresses applied to the casing by the packer elements could be calculated. The systems studied differed in the manner in which the packer elements were coupled; in one system the packers were rigidly coupled end-to-end (rigid coupling), whereas in the other, the tops of the two packers were rigidly coupled leaving the bottom of the upper packer free to slide on the mandrel (sliding coupling). The elements that featured in the two systems were also greatly different. The results indicate that the sliding coupling system tested exhibited nearly ideal behavior up to the maximum interval pressure attained in the tests of 25 MPa. This is accredited to intrinsic superiority of the sliding coupling design.

A laboratory study on the MSW mechanical behavior in triaxial apparatus

2011 ◽  
Vol 31 (8) ◽  
pp. 1807-1819 ◽  
Author(s):  
Mehran Karimpour-Fard ◽  
Sandro Lemos Machado ◽  
Nader Shariatmadari ◽  
Ali Noorzad
Keyword(s):  
Mechanical Behavior ◽  
Laboratory Study ◽  
Triaxial Apparatus

Application of TEM to Deformation, Wear, and Fracture of Ceramics

1974 ◽  
Vol 32 ◽  
pp. 472-473
Author(s):  
B. J. Hockey
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Mechanical Behavior ◽  
Brittle Materials ◽  
High Temperature Strength ◽  
Wide Range ◽  
Corrosive Environments ◽  
Further Development

Ceramics, such as Al2O3 and SiC have numerous current and potential uses in applications where high temperature strength, hardness, and wear resistance are required often in corrosive environments. These materials are, however, highly anisotropic and brittle, so that their mechanical behavior is often unpredictable. The further development of these materials will require a better understanding of the basic mechanisms controlling deformation, wear, and fracture.The purpose of this talk is to describe applications of TEM to the study of the deformation, wear, and fracture of Al2O3. Similar studies are currently being conducted on SiC and the techniques involved should be applicable to a wide range of hard, brittle materials.

Laboratory and in-situ analysis of comet dust

1988 ◽  
Vol 46 ◽  
pp. 8-9
Author(s):  
D.E. Brownlee ◽  
A.L. Albee
Keyword(s):  
Electron Microscopy ◽  
Solar System ◽  
Laboratory Study ◽  
Isotopic Analysis ◽  
Building Blocks ◽  
Sem Analysis ◽  
Early Solar System ◽  
Cometary Material ◽  
Comet Dust

Comets are primitive, kilometer-sized bodies that formed in the outer regions of the solar system. Composed of ice and dust, comets are generally believed to be relic building blocks of the outer solar system that have been preserved at cryogenic temperatures since the formation of the Sun and planets. The analysis of cometary material is particularly important because the properties of cometary material provide direct information on the processes and environments that formed and influenced solid matter both in the early solar system and in the interstellar environments that preceded it.The first direct analyses of proven comet dust were made during the Soviet and European spacecraft encounters with Comet Halley in 1986. These missions carried time-of-flight mass spectrometers that measured mass spectra of individual micron and smaller particles. The Halley measurements were semi-quantitative but they showed that comet dust is a complex fine-grained mixture of silicates and organic material. A full understanding of comet dust will require detailed morphological, mineralogical, elemental and isotopic analysis at the finest possible scale. Electron microscopy and related microbeam techniques will play key roles in the analysis. The present and future of electron microscopy of comet samples involves laboratory study of micrometeorites collected in the stratosphere, in-situ SEM analysis of particles collected at a comet and laboratory study of samples collected from a comet and returned to the Earth for detailed study.

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