[PDF] Top 20 A method for the measurement of hydrodynamic oil films using ultrasonic reflection

... Figure 3 shows a schematic of the measurement apparatus. An ultrasonic pulser/receiver is used to generate controlled voltage pulses. These pulses are used to excite a planar piezo- electric ... See full document

... an ultrasonic method was used to measure the viscosity profile around a static journal bearing by using shear reflection ...viscosity measurement in a rotating journal ... See full document

... An ultrasonic pulse will reflect from a thin film interposed between two ...and ultrasonic pulses reflected back from the inner ...determine oil film thickness. Films in the range ... See full document

... novel ultrasonic method for film thickness is investigated for the case of a PTFE faced thrust ...The reflection of an ultrasonic pulse at the oil film is used to determine the ... See full document

... for ultrasonic measurement of longitudinal velocities propagated in the motor oil with its basic properties shown as Table ...the ultrasonic properties of the AISI 1018 steel ...the ... See full document

... Results reported in Table 1 show that the suggested method is accurate, reproducible and precise, It can easily be adopted in an ordinary phar maceutical laborator y. On the basis of molecularity and available ... See full document

... Mineralogical composition and microstructure of Imankara field OBR suspension sample dissolved in the white spirit and kerosene after the ultrasonic treatment in the presence of “Uniflok” flocculent are shown in ... See full document

... The instrument consists of two modules, first is known as main working module and second is known as measuring module. The main working module and measuring module, both are made of acrylic material. The main working ... See full document

... Malted milk obtained for oats grains of washed and incubated in the drinking water at a temperature of 20 ° C for 30 hours, then washed and subjected to germination for 50 hours to germs size of 1.5 mm. Sprouted grain ... See full document

... In Section 3 of the horizontal Plexiglas pipe, instantaneous velocity profiles were measured using Ultrasonic Velocity Profile (UVP) monitor (Met-Flow SA). UVP probes were located to the vertical ... See full document

... temperature measurement methods for workpieces reported in literature is the tool/workpiece thermocouple ...this method are the parasitic electromotive force (EMF) from secondary joints, the necessity for ... See full document

... the ultrasonic receiving, because the signal intensity is different, the detection time is not the same, but the detection time will cause the measured distance ... See full document

... - Direct measurement method of the temperature of the slab: This method, if implemented, is high-precision control. However, in the reality, it is only possible to measure the surface temperature of ... See full document

... propagating ultrasonic beam either by conversion to other forms of energy in the material (absorption) or by re-direction of small fractions of the beam (scattering) ...balances. Ultrasonic power is a key ... See full document

... untreated oil, a receiving tank, an electric heater, an emergency discharge tank, control and stop valves, and instrumentation (pressure gages, a compound pressure and vacuum gage and ...A hydrodynamic ... See full document

... developed in the last two decades. However, the ESPRIT Invariance Technique is far from applying it to the UVP. This research paper is the first to apply the ESPRIT to the UVP. The experimental results can guarantee that ... See full document

... With the actual processing accuracy and experiment condition, we manufactured the composite sample with thickness 8.54 mm and mass ratio 2 : 1 in the experiment for measuring the permittivity of coal powder. Figure 5 ... See full document

... Spray pyrolysis technique was used to deposit thin films. The set up used was a laboratory assembled spray pyrolysis system shown on figure 1. Spraying was done in a fume chamber, a rotating electric hot plate, ... See full document

... Distance measurement is the process of comparing. Distance measurement is a important factor used in almost every ...measured using several methods. Generally it is measured using measuring ... See full document

... It is observed that the ultrasonic velocity is increases and adiabatic compressibility decreases with increase in concentration of pyridoxine in water. But the variation is non linear at higher concentration ... See full document