Table of Contents
What is piezoelectric effect and magnetostriction effect?
Piezoelectric transducers utilize the piezoelectric property of a material to convert electrical energy directly into mechanical energy. Magnetostrictive transducers utilize the magnetostrictive property of a material to convert the energy in a magnetic field into mechanical energy.
What is a magnetostrictive device?
Magnetostrictive transducers: electromechanical devices that use magnetostriction, an effect found in some ferromagnetic materials that changes dimension in response to the application of a magnetic field.
What is a piezoelectric scaler?
Piezo Scalers offer a more effective and comfortable patient experience, for removing plaque and calculus, when compared to traditional hand scaling. Piezo Ultrasonic Scalers operate using precise, single-plane liner oscillations to ensure that patient mucosal tissue remains undamaged.
What is meant by magnetostriction effect?
Magnetostriction is a property of ferromagnetic materials that causes them to change their shape when subjected to a magnetic field. The effect was first identified in 1842 by James Joule when observing a sample of nickel. This effect can cause losses due to frictional heating in susceptible ferromagnetic cores.
How will you compare the piezoelectric and magnetostriction Generations of ultrasonics?
The differences lie in how the two devices function. Magnetostrictive power scalers operate at an optimal frequency of 20 kHz to 40 kHz, whereas piezoelectric power scalers operate at a slightly higher optimal frequency of 29 kHz to 50 kHz.
What is advantage of piezoelectric oscillator over magnetostriction oscillator?
It is more efficient than the Magnetostriction oscillator. 4. The breadth of the resonance curve is very small. So we can get a stable and constant frequency of ultrasonic waves.
What is magnetostriction material?
Magnetostrictive materials are a class of smart materials that can convert energy between the magnetic and elastic states. For this reason, magnetostrictive materials and devices based on these materials are often referred to as transducers.
What is magnetostriction in magnetic material?
Magnetostriction can be defined as the change in dimension of a piece of magnetic material induced by a change in its magnetic state. Generally, a magnetostrictive material changes its dimension when subjected to a change of the applied magnetic field.
What is magnetostriction oscillator?
Definition of magnetostriction oscillator : an electric oscillator in which the frequency is controlled by the mechanical vibrations induced in a body by magnetostriction.
How will you compare the piezoelectric and Magnetostriction Generations of ultrasonics?
What is the principle behind Magnetostriction oscillator?
It works under the principle of Magnetostriction effect. When a ferromagnetic rod is kept in an alternating magnetic field the rod is set into longitudinal vibrations, this happens due to change in the length of the rod. This longitudinal vibrations, result in the formation of ultrasonic waves at resonance.
What is the principle of magnetostriction?
Principle: When a rod of ferromagnetic material like nickel is magnetized. Longitudinally, it undergoes a very small change in length. This is called Magnetostriction effect. Principle: When a rod of ferromagnetic material like nickel is magnetized.
What is magnetostriction in A transformer?
Magnetostriction is a phenomenon occurring in transformer core in normal operation mode. Yet in time, it can cause the delamination of magnetic core resulting in higher level of vibrations that are measured on the surface of transformer tank during diagnostic tests.