The velocity of ultrasonic waves with a frequency of 3 MHz is experimentally studied in a wide range of volume concentrations (0.1–50%) of ferrite particles in the matrix. The mean size of particles is 6 μm. The results of the study show that the concentration dependence of the velocity...
Deviations from the normal thermodynamic behaviour have been reported in the case of halides of these metals 1 . Investigation by ultrasonic radiation 2,3 of aqueous solutions of cadmium halides showed interesting deviations from the normal behaviour of electrolytic solutions. Hence, it is expected ...
Velocity of ultrasonic waves in liquid normal and para hydrogenThe velocity of ultrasonic waves in liquid hydrogen depends upon the ortho-para concentration in the liquid. Between 14 and 20掳K the velocity in a 99.8% para mixture is about 8 m/sec or about 0.6% smaller than in the 25% ...
National primary standard for the units of the propagation velocities of longitudinal, shear, and surface ultrasonic waves in solids Bazylev P.V., Izotov A.V., Kondratev A.I., Lugovoi V.A., Okishev K.N. Measurement Techniques. 2013. Volume. 56. № 7. pp. 736-742....
Changes in the velocity of ultrasonic waves propagating in wood normal to the direction of applied stresses are discussed. The ultrasonic modes considered ... Hasegawa,Sasaki,Iwata - 《Journal of Wood Science》 被引量: 9发表: 2000年 Acoustoelastic effect of wood III: effect of applied stresses ...
Transport processes in dilute gases over the whole range of Knudsen numbers. Part 2. Ultrasonic sound waves In part 1 (Woods 1979) generalized constitutive relations for the fluid stress p and the heat flux q were established by mean-free-path arguments. These re... LC Woods,H Troughton -...
Ultrasonic sensors are contactless measurement devices which transmit and receive high frequency acoustic waves to measure flow velocity of a fluid. Since there is no contact with the fluid to be measured, ultrasound sensor technology can be used in applications where sensors requiring contact are othe...
ultrasonic wavesvelocityfrequencyparticle sizeconcentrationclusterpercolationporosityHausdorff dimensionalityThe ultrasonic wave velocities in the restructuring of disperse media were measured using interference and pulsed techniques and the coefficient of reflection in suspensions of starch, Al 2 O 3 , and SiO ...
A new method of measuring the velocity of ultrasonic waves in extended concrete products of large dimensions using a pair of transducers situated on different sides of the dihedral corner of the object is described. The method enables the velocity of longitudinal waves inside the concrete to be ...
Systems and methods for determining the velocity of ultrasonic surface skimming longitudinal waves on various materials are described herein. In embodiments, a surface skimming longitudinal wave is generated at a first location on a material, at least a portion of that wave is detected at a second...