What is the maximum level of frequency that a piezoceramic sheet can take ?
In general, piezoceramic sheets have no frequency limit. If there is a limit, it depends on the vibration that is based on the size and shape of the piezoceramic material. A block of piezoceramic transducer that is almost three inches long and has an almost 1 inch thickness vibrates at 13 MHz and expands at 14 KHz. When an ultrasonic frequency is applied to a piezoceramic material that has a surface area that is big, the material takes a large amount of electric current. The frequency limit of this material is the electrodes’ resistive heating.
What is the voltage limit of a piezoceramic sheet ?
The maximum amount of voltage that should be applied to a piezoceramic sheet is 300 volts. The voltage that should be used generally depends on the thickness of the sheet and the frequency used.
What is the maximum amount of mechanical power that a piezoceramic sheet can produce ?
The theoretical and actual amounts of mechanical power that a piezoceramic material sheet can produce differ. An extender PSI 5A piezoceramic sheet is supposed to output work that is equivalent to .00035 joules. When 15 KHz resonance is used on the sheet, the sheet should produce power that is equivalent to 5 watts. However, this amount is hard to obtain in actual situations. The output power is usually less than 10% of the theoretical amount.
What is the amount of electrical power that a piezoceramic sheet can output ?
The amount of electrical power that a piezoceramic sheet can output depends on several factors. These factors are the size of the sheet, the strain level applied on the sheet, amount of stored electrical energy that will be collected, and the frequency applied on the sheet. The electrical power output of a standard PSI 5A sheet that is stretched to ±500 microstrains using 15 KHz frequency and whose stored electrical energy is collected is about 9 watts. This amount is just in theory. In reality, all the stored electrical energy cannot be collected and the 15 KHz frequency cannot be obtained.
What amount of electrical power can a piezoelectric bender actually produce ?
A piezoelectric material can be attached to a solid vertical structure to create a cantilever. When the tip of the bender is exposed to force amounting to 80 grams and frequency amounting to 60 Hz, a voltage amounting to 15 V is produced by the electrical leads of the bender. An electrical power amounting to 2.6 mW is produced when a resistive load amounting to 8 k Ohm is attached to the electrical leads.
Are piezoelectric transducers effective as dynamic and static force sensors ?
Piezoelectric transducers can be used as dynamic force sensors. However, they can only be used for a very short amount of time. On the other hand, these transducers are not recommended to be used as static force sensors.
How long can a piezoelectric material last when used nonstop ?
There is no standard lifespan of a regularly used piezoelectric material. The lifespan depends on several factors such as frequency and electric power applied to them.
Do piezoelectric sensors have spice models ?
Spice models are not available for piezoelectric sensors. That is because piezoelectric materials have so many uses. It is not possible to make a spice model for every application.
Are piezoceramic sheets effective as vibration sensors for machines ?
Piezoceramic sheets are very much capable of detecting vibrations. No matter what the shape and size of the sheet is, it can effectively be used as a vibration sensor for machines.
Can strain be measured by using piezoceramic sheets ?
Piezoceramic sheets can be used to gauge strain. As a matter of fact, they can gauge strain without the help of any other material.
Are the voltage outputs of a piezoceramic strain gauge repeatable ?
When a piezoceramic sheet vibrates, voltage is produced. This voltage is repeatable. A calibrated piezoceramic sensor can accurately repeat voltage outputs for a very long time.
Is the movement of a piezoceramic actuator repeatable ?
The repeatability of the movement of a piezoceramic actuator depends on the cycle time and endpoints. The movement of a piezoceramic actuator is repeatable if the actuator is moved at the same cycle time and the endpoints are the same throughout the cycle. Changing the cycle time and endpoints removes the repeatability of the movement of the actuator.
How does temperature affect piezoceramic transducers?
When temperature is changed, the electrodes of a piezoceramic transducer produce voltage. Moreover, temperature has an effect on the properties of piezoceramic transducers. The effect is different for every temperature change. To know the effect for every temperature change, the properties have to be checked each time a change in temperature happens.
What is the frequency of a piezoceramic sheet’s resonance ?
A piezoceramic sheet does not have only one resonance. It has several resonances. The number of resonances that a piezoceramic sheet has depends on two factors. These factors are the thickness and shape of the piezoceramic material. A flat piezoceramic sheet has three resonances. These are based on the thickness, length, and width of the piezoceramic material.
Can a square wave be used on a piezoceramic transducer ?
A square wave may be used on a piezoceramic transducer depending on the amount of voltage of the square wave. A low voltage square wave will not harm a piezoceramic transducer. On the other hand, a high voltage square wave can damage a piezoceramic transducer. The transducer may break or suffer from shockwave. To prevent damaging a piezoceramic transducer, the adjustment of the square wave should be done carefully.
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