Ultrasonics complex vibrations with twoor three-dimensional vibration locus are effective for various applications. Various high-frequency and complex-vibration systems have been proposed and studied. The applications include ultrasonic direct welding of LSI, semiconductor chips without adhesive or solder, ultrasonic seam welding of thin metal plates, ultrasonic welding of thick metal specimens...

High resolution imaging of wood requires the development of measurement techniques for nondestructive characterisation of this material. The techniques ranging from ionizing radiation to thermal techniques, microwaves, ultrasonics and nuclear magnetic resonance, provide excellent means of obtaining information about the internal structure of wood. The most relevant technique for the imaging of ...

96 patients suffering from degenerative joint disease were treated with ultrasonic waves within a period covering december 1971 to april 1974. out of the to ta l number of 96 patients under treatment, 52 (54%) achieved a satisfacto ry rate while 3? patients (33%) enjoyed a lower rate of recovery and the remaining 12 patients (13%) had negative or unknown response. the methods ofaction and proce...

This paper will propose a new technique to characterize texture of rolled plates of cubic crystallites. This technique uses information from ultrasonic velocities of high order plate mode to improve the estimation of orientation distribution coefficients (ODC's), especially W400. Also discussed will be the generalization of this technique to the case of hexagonal crystallites. Disciplines Mater...

The application of transmission ultrasonics to the equine cannon holds promise as a method of monitoring metacarpal and metatarsal development, quality and integrity under a variety of experimental and field conditions. The validity of relating the velocities of sound pulses transmitted through the cannon to the mechanical breaking strengths of these bones was tested in two studies. Breaking st...