Eddy Current Testing Applications

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Applications Of Eddy Current Testing NDT is referred to as Non-destructive testing and is sometimes called non-destructive examination (NDE) or non-destructive inspection (NDI) as well. It is the method where materials are tested for the presence of any damage or defect. It is a very important concept in quality control as well as in research. Eddy Current Testing is a technique used for the surface inspection of conducting materials. By placing a probe coil close to the surface under test, eddy currents are induced in the conducting surface. This leads to a change in the inductance of the probe coil.

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Developing Eddy Current inspections for wheel bearing studs to sort poorly heat treated parts that a major fastener inspection company was unable to do $250,000 saved. Designed Eddy Current instrument capable of dual applications such as material testing and crack detection, eliminating the need to maintain spare instruments

Eddy current testing applications. Applications. 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 current non-destructive testing method is of paramount importance for technical diagnostics of aircraft parts. The eddy current method has a number of advantages as compared to other methods, in terms of the costs of NDT equipment and consumables. This method is distinguished by high productivity, high reliability of testing and does not impose specific requirements on the quality or. Metal Detectors: It detects present of metals inside rocks, soils etc. with the help of eddy current induction in the metal if present. Data Processing Applications: Eddy current non destructive testing used in investigating composition and hardness of metal structures. Speedometer and Proximity Sensing Applications

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The two major applications of eddy current testing are surface inspection and tubing inspections. Surface inspection is used extensively in the aerospace industry, but also in the petrochemical industry. The technique is very sensitive and can detect tight cracks. Surface inspection can be performed both on ferromagnetic and non-ferromagnetic. Basic Principles of Eddy Current Inspection. Eddy current inspection is one of several NDT methods that use the principal of electromagnetism as the basis for conducting examinations. Several other methods such as Remote Field Testing (RFT), Flux Leakage and Barkhausen Noise also use this principle. An Eddy current can be produced by both electromagnets and permanent magnets, as well as transformers and by the relative motion generated when a magnet is located next to a conducting material. Eddy currents are used in specific applications, including non-destructive testing, which are discussed in this article.

For this materials such as nickel alloy, ferrite chromium etc. testing can be done by permeability variation suppressed by applying magnetic field. Saturation probes contains conventional eddy current coils and magnets. Remote field eddy current testing is the procedure for carbon steel tubing testing. Some facts on testing of eddy currents. It is common, if not mandatory, for tube manufacturers to use some form of non-destructive testing (NDT) during tube production. Two different methods are typically used: Eddy Current Testing (ECT) and Ultrasonic Testing (UT) have their own advantages and limitations, depending on specific criteria such as flaw type, flaw size, or inspection speed. Eddy current NDT can examine large areas very quickly, and it does not require use of coupling liquids. In addition to finding cracks, eddy current can also be used to check metal hardness and conductivity in applications where those properties are of interest, and to measure thin layers of nonconductive coatings like paint on metal parts.

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High quality eddy current testing solutions for complete inspections. Zetec is the industry leader for cost-effective eddy current testing (ECT) in complex applications. We have the most extensive experience, and we develop the highest quality ECT inspection products. By Tom Nelligan and Cynthia Calderwood Magnetism, the underlying principle behind electric motors and generators, relays and stereo speakers, is also the force that enables an imp Eddy current testing is one of several non-destructive testing methods that uses the electromagnetism principle for flaw detection in conductive materials. A specially designed coil energised with an alternating-current is placed in proximity to the test surface, generating a changing magnetic field that interacts with the test-part and.

Magnetism, the underlying principle behind electric motors and generators, relays and stereo speakers, is also the force that enables an important category of NDT tools called eddy current… It was developed for nondestructive testing in continuous production processes. Detection of faults, butt splices, weld seams at tubes (inside and outside), coils and rotational symetric parts by eddy current. When it comes to surface detection of cracks, eddy current testing is optimal. For casting volumetric inspection, ultrasonic testing offers a relevant solution. The M2M Gekko® is a phased array ultrasonic testing (PAUT) portable unit and was the first flaw detector offering at the same time conventional UT, standard PAUT , TOFD and real-time.

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Typical applications for eddy current testing include: Crack detection. Eddy current crack detection equipment can be divided into high frequency instruments for finding surface breaking cracks in ferrous and non-ferrous materials and low frequency instruments for finding subsurface cracks in non-ferrous materials. Eddy-current flaw detectors. eddy current flaw detector Eddycon is referred to the testing and evaluation means.It is intended for manual testing by eddy current technique for the presence of surface and subsurface defects, such as discontinuity of the material (cracks, overlaps, holes, fine cracks, etc.) Read more…

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