Ultrasonic-assisted inner diameter machining is a slicing method for hard and brittle materials. During this process, the sawing force main factor affecting workpiece surface quality tool life. Therefore, based on indentation fracture mechanics, theoretical model of cutting an ultrasound-assisted saw established in paper improvement. The experiment was carried out with alumina ceramics (99%) as...

Measurements have been made of ultrasonic shear wave attenuation and sound velocity in highly textured polycrystalline samples of Bi~SrzCaCuzOs+,in magnetic fields up to 9 telsa and at temperatures down to 4.2 K. Magnetic field dependent attenuation peaks and velocity enhancements were found that are in good agreement with theoretical predictions based on the assumptions of the thermally assist...

Experiments on Highly Oriented Pyrolytic Graphite (HOPG) demonstrate that ultrasonic-assisted actuation with the tip of an Atomic Force Microscope (AFM) cantilever can induce stacking modifications and folding of triangular-shaped HOPG surface flakes. We have generated permanent displacements of buried dislocations that require stacking changes of extended graphene layers by repeatedly scanning...

The influence of oil rate and quality of rice bran oil by enzymatic extraction ultrasonic assisted were studied through designed experiment. The optimum enzymatic hydrolysis conditions were determined by the way of the orthogonal test. The results showed: after lipase enzyme in the rice bran (40 mesh sieve) was killed by the hot steam, the solution compounding material liquid ratio was 1:5 (W/V...

Blueberry leaf as materials, ethanol ultrasonic assisted extraction of blueberry polyphenols, concentration and solid-liquid ratio on time leaves influence the yield polyphenols were researched, orthogonal experiment to optimize technological conditions polyphenol was used. The results showed that optimal from follows, 9.06% with 4min time, 80% 1:45 (g/mL) ratio. Ultrasonic is a convenient high...