Piezoelectric Ceramic P4 and P8 Material used in Electrical Devices
Piezoelectric ceramic Material are used to convert mechanical parameters, such as pressure and acceleration, into electrical parameters or, conversely, to convert electrical signals into mechanical movement or vibration.
In sensors they make it possible to convert forces, pressures and accelerations into electrical signals, and in sonic and ultrasonic transducers to convert electric voltages into vibrations or deformations.
The piezoelectric ceramic wafer is electrical devices with a simple structure and light, with high sensitivity, no magnetic field spread without spillover, copper wire and magnets, low power consumption, less cost, easy mass production and the advantages of widely used. Suitable for ultrasonic and acoustic wave transmitting and receiving, piezoelectric ceramics is relatively large area and can also be used to detect pressure and vibration. The working principle is to use the reversible piezoelectric effect, applied voltage in the audio, and voice.
1.The frequency limit of apiezoceramic sheet and some properties?
Usually the frequency limits of applications are ascertained through the resonances involved with the transducer design and its size and shape. For a piezoceramic sheet, there is no limit for inherent frequency. A sheet of PSI-5A material which is 2.85″ square, .0075″ thick has planar dilatation mode of about 14 KHz and of 13 MHz of thickness mode vibration in the neighborhood. Limiting factors can arise such as the resistive heating of electrodes when considerable current is gathered at large surface area parts during ultrasonic frequencies.
1.What is the process of eliminating vibration through piezoceramics?
The process of vibration cancellation can be achieved through attaching two piezoceramic sheets to the outer surface of the object. They should be close to the point (in a beam) where undesired bending needs to be controlled.The first sheet is used to measure the strain on the surface. The data from a strain sensor is put into a smart box. This gadget controls the power amplifier which consequently drives second sheet.As a result, the mechanically induced movement from second sheet produces vibrations into the structure, which counter the other vibrations.
2.Is there a possibility of Piezo technology replacing magnetic technology anytime in the future?
The possibility of Piezo technology replacing magnetic technology is not possible. Magnetic technology is based on force without physical contact. On the other hand, Piezo technology is purely derived from forces having direct contact from bodies.For instance, Piezo actuators have the capability of making all solenoids obsolete. However, they are heavier which is why it is highly improbably that magnetic technology will be forgotten because of Piezo technology.The main interest in Piezo actuators is because of the solenoids ability to work on less power
Established in 1999, Beijing Cheng-cheng Weiye Science and Technology Co., Ltd is a professional manufacturer in ultrasonic transducers, ultrasonic equipment and piezoelectric ceramics.
Notably in 2004, we researched and developed our ultrasonic tubular transducer equipment into a new product that turns the extreme inconvenience brought about by pipeline and vacuum cleaning into an easy task. This product has been widely used in distillation, mix and mill for various chemical procedures and has received much praise from our customers.
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