Примеры использования Shear wave на Английском языке и их переводы на Русский язык
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Performing measurements with the 250 kHz shear wave transducers.
Shear wave technology is quantitative elastometry providing the possibility to select the examination region.
After 50.6 µs the much stronger shear wave echo appears in the signal.
The shear wave measurement will require use of a specialized high viscosity couplant such as our SWC.
Under Properties, you define the longitudinal and/or shear wave velocities.
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This motion generates a normal incidence shear wave in the scale, which then propagates into the steel.
If the pipe wall thickness is not in the range of the Lamb wave transducers,select a shear wave transducer.
Measure the longitudinal and shear wave sound velocity of the test piece using the appropriate transducers.
Due to the thin setting of horizons it is possible to determine large amplitude statics 100 ms and more,up to 400ms for shear wave statics.
Lamb wave transducers are selected from the left column, shear wave transducers from the right column.
The rate of shear wave propagation is determined by G shear modulus which is directly proportional to Young's modulus E.
For methane and ice, the most increase of compressional and shear wave velocities is observed in the area of low saturations.
Today, shear wave elastography technique is applied to diagnose liver, mammary gland and thyroid gland diseases 9, 11.
For THF hydrate a gradual increase of compressional and shear wave velocities with increasing hydrate saturation is observed.
In the case of anisotropic materials, elastic properties vary with direction, andso does longitudinal and/or shear wave sound velocity.
Measure the longitudinal and shear wave sound velocity of the test piece using the appropriate transducers and instrument setup.
F +266 +266 temperature compensation x x 1 depending on application, typical absolute value for natural gas, nitrogen,compressed air 2 shear wave transducer.
This is a considerable advantage of shear wave ultrasound elastography(SWUE) in comparison with other methods of elastography 5, 6.
The formulas developed here for recalculation of the stiffness values allow one to correctly compare the shear wave elastography data obtained with different scanners.
By measuring the rate of shear wave propagation one can obtain quantitative evaluation of Young's modulus E, and therefore, quantitatively characterize tissue stiffness.
The formulas proposed for recalculating the stiffness indices allow an accurate comparison between the shear wave elastography results obtained with different scanners.
The aim of the study was to assess possibilities of shear wave ultrasound elastography in evaluating severity of fibrosis of a renal transplant aged from 1 to 3 years and older.
Commonly used transducers include an M112 orV112 broadband longitudinal wave transducer(10 MHz) and a V156 normal incidence shear wave transducer 5 MHz.
Graphically, formulas(5) and(7) for the shear wave velocity V(of the Acuson S2000 scanner) conversion into the Young's modulus E(of the Aixplorer and LOGIQ E9 scanners) are shown in Figure 6.
If using a pulser/receiver, simply record the round-trip transit time through an area of known thickness with both longitudinal and shear wave transducers, and compute.
The EMAT generates a shear wave, so the instrument must be calibrated to a shear wave velocity of approximately 0.1280 in/uS or 3,240 m/S in typical carbon steel.
The acoustopolariscopy method was used to evaluate elastic anisotropy,experimental determinations of the density, compression and shear wave velocities under laboratory conditions were made.
It was considered that a shear wave had been induced when the fill had been pushed out over the new 4m section and to minimize this effect any fill should placed carefully by an excavator taking particular attention to the joints between adjacent stabilised areas.
As the temperature increases from 24 C to 150 C,the ultrasonic velocity of the ULTEM wedge material drops from 2470 m/s to 2270 m/s, while the shear wave velocity in steel drops from 3240 m/s to 3103 m/s.
Special ultrasonic Lamb and shear wave transducers are simply clamped onto the outside of the pipe, thus no cutting into the pipe or process interruption is required for installation- especially a benefit for facilities where pipes can't be depressurizes easily.