Ultrasonic science key inquiry ultrasonic waves in various media formation, dissemination, reading, signal analysis and processing and related roles and many other issues; ultrasonic physics and ultrasonic operation is ultrasonic science two key elements.
Ultrasonic physics is the basic ultrasonic engineering program, for different kinds of ultrasonic operation electronic applications to give the necessary theoretical and experimental basis.
The research objectives of the ultrasonic engineering program include the technical design and process research of ultrasonic wave creating, transmitting and reading equipment for various ultrasonic electronic applications.
Transducer is the energy conversion components, is a way to convert one type of energy into another form of energy equipment, it can realize the electrical energy and acoustic energy between each other.
Ultrasonic waves spread in the medium will cause a lot of physical, chemical and biological effects, and ultrasonic penetration, information carrying a lot of easy to complete fast and accurate online non-destructive testing technology and high-quality diagnosis. At this stage, all kinds of ultrasonic transducer in industrial production, agriculture and animal husbandry, national defense and security, biomedical industry and scientific research and so on many aspects to obtain a wide range of applications.
When the transducer is in the state of emission, the electrical energy into mechanical kinetic energy, and then into acoustic energy.
The electric oscillation signal sent from the output stage of the excitation power supply will cause changes in the electric field or magnetic field in the electrical energy storage element in the transducer, this kind of electric field or magnetic field changes according to some kind of role in the mechanical vibration system of the transducer to form a driving force, so that it enters into the state of vibration, which in turn promotes the vibration with the mechanical vibration system of the transducer to the contact with the medium vibration, the radiation of acoustic waves to the medium.
When the transducer is in the state of reading, the acoustic energy into mechanical kinetic energy, and then into electrical energy.
This makes the mechanical vibration system of the transducer vibrate, by virtue of some physical effect. Caused by the transducer storage element in the electric field or magnetic field corresponding to the transformation, so that the electrical output of the transducer to form a voltage and current corresponding to the acoustic signal.
Ultrasonic welding, is the use of electrical boxes will be converted into high-frequency high-voltage signal, and then through the transducer system to convert the signal into high-frequency mechanical vibration, added to the plastic products, so that the two major categories of plastic products between the rapid friction occurs, the temperature rises when the temperature of the products to do products of their own melting point, so that the product interface quickly melted, at the same time, the products in the specific pressure under the cooling of the stereotypes, in order to achieve the extreme Fusion.
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