Design of high-intensity ultrasonic sound intensity measurement based on narrow pulse method
The research on high-intensity ultrasonic has taken the delectable achievement in the treatment of cancer and the detection of internal structure for the dam. The rapid and accurate sound intensity measurement of high-intensity ultrasonic transducer is necessary for its application and generalization. The paper introduces the principle of sound intensity measurement, proposes measurement scheme on the basis of the narrow pulse method and also discusses the design of hardware circuit and software.
Characterization of the Sound Field of High Intensity Focused Ultrasound
The methods of detection of high intensity focused ultrasound (HIFU) field are described in this paper, such as radiation forcer balance,hydrophone,optical fiber and optics from the difficulties and characteristics of high intensity focused ultrasound field, and also made the comparison in these methods.
Composite monolayer fabrication by an arc-spray process
A single layer (monotape) technique for fabricating complex high-temperature tungsten-fiber-reinforced superalloy composites is proposed. The fabrication of sheets of arc-sprayed monotape 38 cm wide and 122 cm long has been demonstrated. Composites fabricated using the method are shown to have equal tensile strength and a cleaner matrix than composites fabricated from powder metal cloth monotapes, and the present technique is less expensive than the powder metal fabrication techniques.