Eddy Current Applications Slideshare

1. Eddy currents are used for braking; since there is no contact with a brake shoe or drum, there is no mechanical wear. However, an eddy current brake cannot provide a "holding" torque and so may be used in combination with mechanical brakes. 2. Repulsive effects and levitation In a varying magnetic field the induced currents exhibit diamagnetic-like repulsion effects.

Eddy current applications slideshare. physics project report on eddy current. 12th class is a no risk class. it is the class which decide your future.. pascal’s law and its applications; bridge rectifier- a circuit using four diodes to provide full wave rectification.converts an ac voltage to a pulsating dc voltage. to construct a circuit of quiz buzzer. The advantages of eddy current testing are: Sensitivity to surface defects. Able to detect defects of 0.5mm in length under favourable conditions. Can detect through several layers. The ability to detect defects in multi-layer structures (up to about 14 layers), without interference from the planar interfaces. Can detect through surface coatings. In this study the amount of the pearlite content is analyzed using the eddy current testing response. B.P.C. Rao [9] et al investigated the basics of Eddy Current Testing. Abbasian et al [10. Eddy current testing can be used for a wide range of applications. It is often applied for surface crack detection and material sorting. Material sorting is used to ensure that the proper materials are in use and to verify component materials or assembly features (such as the orientation or position of a subcomponent in an assembly).

Eddy currents (also called Foucault's currents) are loops of electrical current induced within conductors by a changing magnetic field in the conductor according to Faraday's law of induction.Eddy currents flow in closed loops within conductors, in planes perpendicular to the magnetic field. They can be induced within nearby stationary conductors by a time-varying magnetic field created by an. The eddy current density, and thus the strength of the response from a flaw, is greatest on the surface of the metal being tested and declines with depth. It is mathematically convenient to define the “standard depth of penetration” where the eddy current is 1/e (37%) of its surface value. The standard depth of penetration in mm is given by the In many applications, the loss of useful energy is not particularly desirable. But there are some practical applications. Such an application is the eddy current brake. Eddy currents are one of the most outstanding of electromagnetic induction phenomena. They appear in many technical problems and in a variety of everyday life situations. Eddy current (EC) testing is a no contact method for the inspection of metallic parts. Eddy currents are fields of alternating magnetic current that are created when an alternatin

Eddy Currents are electric currents produced in a metal due to changing magnetic flux (happens only in AC or ripple DC or in situations where the voltage or current is changing with respect to time). One example is in transformer where Eddy Curre... 5 Applications of Eddy Current Brakes. Eddy current braking is a state of the art braking technology that has both economic and risk management advantages. This unique braking system takes the simple function of magnetic and non-magnetic forces and turns it into a high tech masterpiece. eddy current : conductor fluctuating magnetic field voltage current eddy current 5. EDDY CURRENT BRAKES: It is a device used to slow a moving object by creating eddy currents. Braking action is made by Varying the Strength of the Magnetic Field. A Braking Force is possible when an electric current is passed through the Electromagnets. Eddy currents are created through a process called electromagnetic induction. When alternating current is applied to the conductor, such as copper wire, a magnetic field develops in and around the conductor. This magnetic field expands as the alternating current rises to maximum and collapses as the current is reduced to zero.

Explore Eddy Current Brakes with Free Download of Seminar Report and PPT in PDF and DOC Format. Also Explore the Seminar Topics Paper on Eddy Current Brakes with Abstract or Synopsis, Documentation on Advantages and Disadvantages, Base Paper Presentation Slides for IEEE Final Year Electrical and Electronics Engineering E&E or IEEE Electrical BTech, BE, MTech Students for the year 2015 2016. Types of eddy current brakes. Real eddy current brakes are a bit more sophisticated than this, but work in essentially the same way. They were first proposed in the 19th century by the brilliant French physicist Jean-Bernard Léon Foucault (also the inventor of the Foucault pendulum and one of the first people to measure the speed of light accurately on Earth). Inductor types based on core There are different types of inductors. Depending on their material type they are basically categorized as follows Air Core Inductor Ceramic core inductors are referred as “Air core inductors”. Ceramic is the most commonly used material for inductor cores. Ceramic has very low thermal co-efficient of expansion, so even for […] Eddy current testing: Eddy currents are created through a process called electromagnetic induction. When alternating current is applied to the conductor, such as copper wire, a magnetic field develops in and around the conductor. This magnetic field expands as the alternating current rises to maximum and collapses as the current is reduced to zero.