What are the Common Applications for Eddy Current Testing?

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The concept of Eddy Currents is one of the least understood concepts in AC Electromagnetics. The Eddy Current testing allows for a fast and reliable means to examine the manufacturing and possible production problems and defects. Due to eddy currents, the current flow through the conductor is changing direction constantly without any conduction losses. The more abrupt the change in the magnetic field, the higher frequency eddy currents will be generated.

The patented Eddy Current metal detection system provides accurate, fast, and easy non-contact detection of ferromagnetic and no ferromagnetic threats. The unique design of the detector eliminates the need for manual sweeping and is the only security device on the market that instantly displays an alarm if an object is detected. Its ability to detect radiation from common household staples virtually eliminates false alarms. The Eddy-Current Speed Sensor can be used for Energy Meters, Automobile Speedometers, Induction Alternating Current (AC) motors, Free-fall devices, as a way of detecting coins in vending machines. It increases temperatures uniformly in induction furnaces and is part of proximity/displacement sensors.

A common application for eddy current testing:

Magnetic levitation: 

The magnetic levitation suspension system consists of a pair of parallel opposing steel rails on which the train runs, surrounded by a large density of superconducting magnets that forms the primary and secondary coils needed to produce controlled lifting force. The repulsion between the primary and secondary coils produces sufficient force for levitation. When the speed is increased above 120 miles per hour, the magnetic currents get so strong that they repel, accounting for the speed rise without increasing the applied magnetic field strength first required in conventional systems. The distance between the two rails provides lift while keeping a gap between the coils to prevent them from contacting each other and short.

Non-destructive Testing:

The non-destructive eddy current testing method utilizes a test sample that can be continuously changed over a range of speeds that are obtainable. The interesting component of this method is the spatial measurements which are made by the EDDY CURRENT testing device. Real-time results can now be determined from this information and are used in order to discover defects or flaws in the samples. This is a non-destructive examination due to the fact that it functions at low energy levels compared to other assessment procedures such as ultrasound, x-ray, or irradiation.

Eddy’s current test is a non-invasive way to detect a defect in the tube. This method is extremely sensitive and can detect extremely small defects in the tube wall. There are a number of NDT methods and each has its own advantages. The EDDY CURRENT TUBE TESTER is only one type of Non-destructive testing, but it is also the most powerful for spotting small cracks and fissures in your tubes. With an extensive database of both aluminum and stainless steel, users can find a wide range of eddy current testing of tubes they can test with these tester units. The MCS Eddy Current Testing Chiller is a portable, easy-to-use device for detecting the early signs of failure from corrosion and corrosion-related stress in reciprocating air compressors, centrifugal chillers, cooling towers, and condensers. The chiller can be rigged inside or outside the system or vessel to be inspected.

This eddy-current testing equipment allows companies to check the integrity of industrial components in situ – without the need to destroy them. It works by applying a magnetic field to an area of interest and then detecting any unexpected changes in that field using sensors called ‘probes’. This way, it is only necessary to run the equipment near a component’s surface, rather than inside it.

Conclusion

Eddy current testing services American efficiency are the only independent eddy current testing firm to have MIC Level III Project Managers. Our MIC Project Managers oversee all aspects of our business from sales, estimating, project management, training, and quality control to satisfy our customers’ requirements for timely service and accurate reporting. If you are ready to hire an experienced eddy current inspection company contact us today to discuss your electromagnetic and magnetic components inspection needs. We provide Eddy Current Inspection services to a wide range of industries including aerospace, automotive, construction, as well as government & military applications. This instrument is used during the testing of the marine galvanometer so as to automatically terminate the current after a fixed period of time.

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