Significance of grain boundaries for transport phenomena in
... electronics, sensors and catalysis. It has also been mentioned as a possible material for phononics and heat management applications due to its unique vibrational properties, which give it a high thermal conductivity. Grain boundaries have been found to decrease the thermal conductivity, but they ma ...
... electronics, sensors and catalysis. It has also been mentioned as a possible material for phononics and heat management applications due to its unique vibrational properties, which give it a high thermal conductivity. Grain boundaries have been found to decrease the thermal conductivity, but they ma ...
STRAIN RATE BEHAVIOUR OF THREE ROCKS IN TENSION E. C
... The fracture processes of rocks are not the same under the static and dynamic types of loading as for concrete [5–7]. The rapid increase in terms of strength with increase in rate of loading has been explained through the impossibility for the weakest links in the rock to participate in the fracturi ...
... The fracture processes of rocks are not the same under the static and dynamic types of loading as for concrete [5–7]. The rapid increase in terms of strength with increase in rate of loading has been explained through the impossibility for the weakest links in the rock to participate in the fracturi ...
Geochronological constraint on the brittle-plastic deformation along the
... this does not exclude the possibility that the low-T mylonites formed after the high-T mylonite. The cooling histories deduced from the K-Ar ages, however, do not clearly show the regional temperature difference during mylonite formation due to the rapid cooling of the granitic rocks and the wide er ...
... this does not exclude the possibility that the low-T mylonites formed after the high-T mylonite. The cooling histories deduced from the K-Ar ages, however, do not clearly show the regional temperature difference during mylonite formation due to the rapid cooling of the granitic rocks and the wide er ...
The Photographic Latent Image From an old Kodak web page As
... Because a grain is completely exposed by the passage of an energetic electron, all x-ray exposures are, as far as the individual grain is concerned, extremely short. The actual time that an x-ray-induced electron is within a grain depends on the electron velocity, the grain dimensions, and the "squa ...
... Because a grain is completely exposed by the passage of an energetic electron, all x-ray exposures are, as far as the individual grain is concerned, extremely short. The actual time that an x-ray-induced electron is within a grain depends on the electron velocity, the grain dimensions, and the "squa ...
short and long-term folding and faulting of the lithosphere under
... to understand this work. In the second chapter, we will use the first increments of the numerical simulations to answer the question of what happens first, faulting or folding, depending on the parameters used. Finally, in the third chapter we will use long-term simulations to find out about the evo ...
... to understand this work. In the second chapter, we will use the first increments of the numerical simulations to answer the question of what happens first, faulting or folding, depending on the parameters used. Finally, in the third chapter we will use long-term simulations to find out about the evo ...
2. Strain EXAMPLE 2.1
... State of strain at a point is described by six strain components: a) Three normal strains: x, y, z b) Three shear strains: γxy, γxz, γyz c) These components depend upon the orientation of the line segments and their location in the body Strain is a geometrical quantity measured by experimental te ...
... State of strain at a point is described by six strain components: a) Three normal strains: x, y, z b) Three shear strains: γxy, γxz, γyz c) These components depend upon the orientation of the line segments and their location in the body Strain is a geometrical quantity measured by experimental te ...
Bounding the plastic strength of polycrystalline solids by linear
... estimate is known to be particularly accurate for polycrystalline solids such as the ones considered in this work—see Willis (1982) and Lebensohn et al. (2004)—but more importantly, it is known to be exact for a special subclass of polycrystals with prescribed one- and two-point statistics, consisti ...
... estimate is known to be particularly accurate for polycrystalline solids such as the ones considered in this work—see Willis (1982) and Lebensohn et al. (2004)—but more importantly, it is known to be exact for a special subclass of polycrystals with prescribed one- and two-point statistics, consisti ...
AZU_TD_BOX206_E9791_
... forces are less correlatable with the stress data than models without drag forces. ...
... forces are less correlatable with the stress data than models without drag forces. ...
Short-time Dynamics of Frictional Strength in Dry Friction
... from the acrylic-air interface. When the slider block is pressed onto the base block, contact is made at numerous discrete micro-contacts. In this configuration, incident light is reflected away from the interface at every point where contact does not occur. Light is only transmitted across the inte ...
... from the acrylic-air interface. When the slider block is pressed onto the base block, contact is made at numerous discrete micro-contacts. In this configuration, incident light is reflected away from the interface at every point where contact does not occur. Light is only transmitted across the inte ...
Metamodel assisted design optimization of
... of selecting a structure of high quality global approximations. Selection of the structure of an analytical approximation function is a problem of empirical model building. Selection of individual regression components in a model results in solving a combinatorial optimization problem. Even if a ban ...
... of selecting a structure of high quality global approximations. Selection of the structure of an analytical approximation function is a problem of empirical model building. Selection of individual regression components in a model results in solving a combinatorial optimization problem. Even if a ban ...
Dislocation density evolution upon plastic deformation of Al-Pd
... from crystalline materials (Johnston 1962, Alexander and Haasen 1968). In crystals at higher strains the density of dislocations increases, which leads (equation (6)) to an increase in the internal stress. This is the well known work-hardening behaviour. Although in the present study the behaviour a ...
... from crystalline materials (Johnston 1962, Alexander and Haasen 1968). In crystals at higher strains the density of dislocations increases, which leads (equation (6)) to an increase in the internal stress. This is the well known work-hardening behaviour. Although in the present study the behaviour a ...
Shape-Memory Micropumps - National Taiwan University
... Qϕ0 is the relaxation of density ϕ0 . The notation F = ( F̄|b) means that the first two columns and final column of the 3 × 3 matrix F are replaced by F̄ and b, respectively. The exact definition of Qϕ0 can be found in6, 8) and is not shown here as it requires advanced mathematical analysis which is ...
... Qϕ0 is the relaxation of density ϕ0 . The notation F = ( F̄|b) means that the first two columns and final column of the 3 × 3 matrix F are replaced by F̄ and b, respectively. The exact definition of Qϕ0 can be found in6, 8) and is not shown here as it requires advanced mathematical analysis which is ...
Random Lattice-Particle Simulation of Statistical Size Effect in Quasi
... Until the 1980s, any observed size effect on the nominal strength of structures was attributed to material randomness. This view is now known to be correct only for perfectly brittle materials, such as metals embrittled by fatigue, or fine-grained ceramics. Beginning in 1984 共Bažant 1984兲, it has gr ...
... Until the 1980s, any observed size effect on the nominal strength of structures was attributed to material randomness. This view is now known to be correct only for perfectly brittle materials, such as metals embrittled by fatigue, or fine-grained ceramics. Beginning in 1984 共Bažant 1984兲, it has gr ...
The Effects of Misorientation Angle and Impurities on Grain
... (the vibration is produced to simulate atom movements in metal). Dislocations in a raft usually “[retain] a step in the boundary”, and some of the dislocations will slip, causing the grain boundary to migrate across the length of a step. In A. H. King’s research[25], the phenomenon of diffusion indu ...
... (the vibration is produced to simulate atom movements in metal). Dislocations in a raft usually “[retain] a step in the boundary”, and some of the dislocations will slip, causing the grain boundary to migrate across the length of a step. In A. H. King’s research[25], the phenomenon of diffusion indu ...
EBSD: Current state, prospects and comparison with XRD
... The great majority of natural as well as technologically used solids are not amorphous, but have a polycrystalline structure that is characterized by size, shape and arrangement of the constituting crystals and phases. The distribution of preferred grain orientations, or in short (crystallographic) ...
... The great majority of natural as well as technologically used solids are not amorphous, but have a polycrystalline structure that is characterized by size, shape and arrangement of the constituting crystals and phases. The distribution of preferred grain orientations, or in short (crystallographic) ...
tension, compression and shear fatigue of a closed cell foam
... other properties, like fracture toughness, also scale similarly well. Typical stress-strain relations are given in Fig. 2. For reasons of discussion these are plotted in two graphs. In Fig. 2a the tensile and compression relations are shown together and in Fig. 2b the shear relations are shown. By d ...
... other properties, like fracture toughness, also scale similarly well. Typical stress-strain relations are given in Fig. 2. For reasons of discussion these are plotted in two graphs. In Fig. 2a the tensile and compression relations are shown together and in Fig. 2b the shear relations are shown. By d ...
Homogenization principle based multi
... Important requirements for homogenization using representative volume elements are imposed on the size of the RVE and on the applied boundary conditions. The size of the RVE has to be chosen large enough such that a sufficient number of inclusion particles or pores are present and the RVE really is ...
... Important requirements for homogenization using representative volume elements are imposed on the size of the RVE and on the applied boundary conditions. The size of the RVE has to be chosen large enough such that a sufficient number of inclusion particles or pores are present and the RVE really is ...
Principle of ductile regime machining
... small to avoid cleavage. Consequently a transition in the chip removal process from brittle to ductile may take place depending on the uncut chip thickness. The negative rake angle provides the required hydrostatic pressure for enabling plastic deformation of the work material beneath the tool rad ...
... small to avoid cleavage. Consequently a transition in the chip removal process from brittle to ductile may take place depending on the uncut chip thickness. The negative rake angle provides the required hydrostatic pressure for enabling plastic deformation of the work material beneath the tool rad ...
Metamorphic Rocks
... • These regions are separated by lines called isograds, which are lines that delineate the first appearance of a mineral from a new metamorphic facies ...
... • These regions are separated by lines called isograds, which are lines that delineate the first appearance of a mineral from a new metamorphic facies ...
Characterization of a High Strain Composite Material
... Unidirectional solid rods were chosen for these tests, because thin, flat samples have to be very short to avoid structural buckling. Moreover, if the sample is clamped at the ends in a standard compression rig the load is transmitted to the sample through shearing tractions on the end surface, and ...
... Unidirectional solid rods were chosen for these tests, because thin, flat samples have to be very short to avoid structural buckling. Moreover, if the sample is clamped at the ends in a standard compression rig the load is transmitted to the sample through shearing tractions on the end surface, and ...
The Caribbean-North America-Cocos Triple Junction
... Mann, 2007]. Numerical modeling, based on seismic tensors and GPS velocity fields [Álvarez‐Gómez et al., 2008; Rodriguez et al., 2009], assigns an important role to the fore‐arc sliver and the arcuate shape of the transform boundary. In this model the western edge of the Chortís block is regarded as ...
... Mann, 2007]. Numerical modeling, based on seismic tensors and GPS velocity fields [Álvarez‐Gómez et al., 2008; Rodriguez et al., 2009], assigns an important role to the fore‐arc sliver and the arcuate shape of the transform boundary. In this model the western edge of the Chortís block is regarded as ...
Module 10 Crystal Defects in Metals I Lecture 10 Crystal
... Metals we are familiar with are mostly crystalline. They are made of several crystals having different orientations. Their properties would depend on the properties of the individual crystals (also commonly known as grains) and the way they are arranged. In the previous ...
... Metals we are familiar with are mostly crystalline. They are made of several crystals having different orientations. Their properties would depend on the properties of the individual crystals (also commonly known as grains) and the way they are arranged. In the previous ...
Lecture 8 Springs
... The results of the two equations differ by less than 1%. Bergstrasser factor is preferred due to simplicity ...
... The results of the two equations differ by less than 1%. Bergstrasser factor is preferred due to simplicity ...
Tsai-Hill Failure Theory - University of South Florida
... The Tsai‐Hill Failure Theory does not distinguish between the compressive and tensile strengths in its equation. This can result in underestimation of the maximum loads that can be applied when compared to other failure theories. ...
... The Tsai‐Hill Failure Theory does not distinguish between the compressive and tensile strengths in its equation. This can result in underestimation of the maximum loads that can be applied when compared to other failure theories. ...
Bild 1 - Division of Solid Mechanics
... Material response 1,6% Strain range, 400°C, R=0 • As can be seen in the curves from the material testing, the hardening curve of the first loading is lower than that of the following cycling • This is due to a large softening of the material, possibly caused by the formation of planar slip bands • A ...
... Material response 1,6% Strain range, 400°C, R=0 • As can be seen in the curves from the material testing, the hardening curve of the first loading is lower than that of the following cycling • This is due to a large softening of the material, possibly caused by the formation of planar slip bands • A ...