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Shear vertical

Splitting into two quasi shear waves If the transducer is coupling to the isotropic steel the incident shear wave may split into two independent quasi shear vertical wave-... [Pg.154]

The isotropic part has not changed. The quasi pressure (qP) curve splits up into a real and an imaginary branch . During this real part the transversal share of the polarization increases until the wave becomes a quasi shear vertical wave. Furthermore, the wave is not anymore a propagating but an evanescent wave in this part. The branch is again only real, it is part of the quasi shear vertical (qSV) curve of the homogeneous case (dotted line), its polarization is dominated by the transversal share and the wave is a propagating one. For the branches (real) and... [Pg.155]

The frequency of the MS7 mode is well suited to give some fix points for the lattice dynamical calculation. This is obvious by inspection of Fig. 19 which shows the displacement pattern of this mode at the T point (at T the MS7 phonon corresponds to the A, symmetry group). The motions of the atoms being shear vertical, the lattice layers remain rigid planes i.e. the frequency of... [Pg.237]

Fig. 11.4. Velocities of bulk and surface waves in an (001) plane the angle of propagation in the plane is relative to a [100] direction, (a) Zirconia, anisotropy factor Aan = 0.36 (b) gallium arsenide, anisotropy factor Aan = 1.83 material constants taken from Table 11.3. Bulk polarizations L, longitudinal SV, shear vertical, polarized normal to the (001) plane SH, shear horizontal, polarized in the (001) plane. Surface modes R, Rayleigh, slower than any bulk wave in that propagation direction PS, pseudo-surface wave, faster than one polarization of bulk shear wave propagating in... Fig. 11.4. Velocities of bulk and surface waves in an (001) plane the angle of propagation <j> in the plane is relative to a [100] direction, (a) Zirconia, anisotropy factor Aan = 0.36 (b) gallium arsenide, anisotropy factor Aan = 1.83 material constants taken from Table 11.3. Bulk polarizations L, longitudinal SV, shear vertical, polarized normal to the (001) plane SH, shear horizontal, polarized in the (001) plane. Surface modes R, Rayleigh, slower than any bulk wave in that propagation direction PS, pseudo-surface wave, faster than one polarization of bulk shear wave propagating in...
Longitudinal (tensile) motion SH = jr-Polarized shear (horizontal) SV = y-Polarized shear (vertical)... [Pg.1017]

In the A direction there is evidence of a single localized mode polarized in the sagittal plane. The penetration depth decreases by increasing Q. At the M point it becomes a Shear Vertical mode almost localized on the surface. In the upper lens is present a localized mode that becomes resonant for Au. In the Y direction there are different localized modes and resonances. There are two surface modes which hybridize mostly in passing from Cu to Au. The upper mode becomes resonant in the continuum for Cu and kg, while for Au emerges as a localized state in the first lens. Also in the upper lens there is a localized mode which moves toward the upper branch in passing from Cu to Au. [Pg.426]

Fig. 14a, b. Al(lll) ( 3 x VS) Na. Surface phonon dispersion determined by HREELS along FM. (a) clean surface HREELS data open circles and LDM results (b) adsorbate covered surface (HREELS open circles) and LDM calculation assuming a substitutional adsorption site for the Na adatoms. Shear vertically polarised surface modes are represented by thick solid lines, shear horizontally polarized surface modes by full squares [97Nag]. [Pg.396]

In the future, it is expected to be possible to make more routine use of additional wave types, specifically shear or S waves (polarised to horizontal and vertical components) which have a transverse mode of propagation, and are sensitive to a different set of rock properties than P waves. The potential then exists for increasing the number of independent attributes measured in reflection surveys and increasing the resolution of the subsurface image. [Pg.23]

Figure C2.3.12. Two-dimensional neutron scattering by EOggPO gEOgg (Pluronic F88) micellar solution under shear witli (a) tlie sample shear axis parallel to tlie beam, and (b) tlie sample rotated 35° around tlie vertical axis. Reflections for several of tlie Miller indices expected for a bee lattice are annotated. Reproduced by pennission from figure 4 of [84]-... Figure C2.3.12. Two-dimensional neutron scattering by EOggPO gEOgg (Pluronic F88) micellar solution under shear witli (a) tlie sample shear axis parallel to tlie beam, and (b) tlie sample rotated 35° around tlie vertical axis. Reflections for several of tlie Miller indices expected for a bee lattice are annotated. Reproduced by pennission from figure 4 of [84]-...
In the Couette flow inside a cone-and-plate viscometer the circumferential velocity at any given radial position is approximately a linear function of the vertical coordinate. Therefore the shear rate corresponding to this component is almost constant. The heat generation term in Equation (5.25) is hence nearly constant. Furthermore, in uniform Couette regime the convection term is also zero and all of the heat transfer is due to conduction. For very large conductivity coefficients the heat conduction will be very fast and the temperature profile will... [Pg.163]

Fig. 8. Vertical velocity profile near impeller blade tip where the shear rate = AV/AV. Fig. 8. Vertical velocity profile near impeller blade tip where the shear rate = AV/AV.
In the Irvine-Park falling needle viscometer (FNV) (194), the moving body is a needle. A small-diameter glass or stainless steel needle falls vertically in a fluid. The viscous properties and density of the fluid are derived from the velocity of the needle. The technique is simple and useflil for measuring low (down to lO " ) shear viscosities. The FNV-100 is a manual instmment designed for the measurement of transparent Newtonian and non-Newtonian... [Pg.190]

Curves for the viscosity data, when displayed as a function of shear rate with temperature, show the same general shape with limiting viscosities at low shear rates and limiting slopes at high shear rates. These curves can be combined in a single master curve (for each asphalt) employing vertical and horizontal shift factors (77—79). Such data relate reduced viscosity (from the vertical shift) and reduced shear rate (from the horizontal shift). [Pg.369]

Trajectory models require spatiaUy and temporaUy resolved wind fields, mixing-height fields, deposition parameters, and data on the spatial distribution of emissions. Lagrangian trajectory models assume that vertical wind shear and horizontal diffusion are negligible. Other limitations of trajectory and Eulerian models have been discussed (30). [Pg.380]

Vapor Shear Controlling For vertical in-tube condensation... [Pg.567]


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See also in sourсe #XX -- [ Pg.426 ]




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