Eddy Current Testing Service

This ndt method is based on the principles of electromagnetic induction. The flow of electricity, under certain circumstances, can cause magnetism. Magnetism under certain circumstances causes the flow of electricity. When an alternating current (ac) is passed through a coil, a changing magnetic field is generated. This method can be applied to tubing, sheets, cylinders and coatings and provides a means for measuring conductivity, detecting discontinuities, and determining the thickness of coating or plating on articles. Since a continuous indication is a part of the basic testing system, automatic production testing is particularly feasible.

Eddy-current testing (also commonly seen as eddy current testing and ECT) is one of many electromagnetic testing methods used in nondestructive testing (NDT) making use of electromagnetic induction to detect and characterize surface and sub-surface flaws in conductive materials. 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 materials

Eddy-current testing (also commonly seen as eddy current testing and ECT) is one of many electromagnetic testing methods used in nondestructive testing (NDT) making use of electromagnetic induction to detect and characterize surface and sub-surface flaws in conductive materials.

EDDY CURRENT TESTING OF TUBES ECT is an NDT method mostly used to examine tubing in heat exchangers tubes, generators, condensers, air coolers. Eddy current testing (ECT) is an effective way of assessing conditions and fitness for use of pipes and tubes in petrochemical, aerospace, chemical, automobile, oil and gas, and various other industries. It is used for the detection of corrosion, cracks, coating thickness, and wear changes in the tube. It is a fast inspection technique and a major advantage of the method is that there is minimal surface preparation. But this technique is only suitable for non-ferrous and conductive material such as copper, stainless steel, titanium, etc. ECT (eddy current testing) uses the principle of electromagnetic induction to identify defects in the tubes. A probe is inserted along the length of the tube and pushed along its entire length. Eddy current is generated by the coil which Is present in the probe. Theses eddy currents and any disturbance in them are noted simultaneously on the screen by measuring electrical impedance. This impedance is noted on the screen and any defect that is present is identified. A benefit of eddy current testing (ECT) is fast and real-time assessment can be done. Eddy current testing of tubes is highly specialized, requiring expertise in special types of equipment. Alpha Sonix’s non-destructive testing inspectors are ASNT Level II and III qualified in eddy current testing and have many years of valuable experience in the inspection of tubes. Our inspectors bring expertise which helps in the accurate assessment so you can make an informed decision based on the accurate data being measured. Alpha Sonix IS committed to providing Total Quality Assurance and ensuring inspections meet deadlines, standards, and are carried out safely and efficiently. While the schedule of maintenance is coordinated in such a way that minimizes disruption in business occurs while providing an optimum level of inspection within minimum possible time.

Eddy current testing continuous wave eddy current testing is one of several non-destructive testing methods that use the electromagnetism principle. Conventional eddy current testing utilises electromagnetic induction to detect discontinuities in conductive materials. A specially designed coil energised with alternating current is placed in proximity to the test surface generating changing magnetic-field which interacts with the test-part producing eddy current in the vicinity. Variations in the changing phases and magnitude of these eddy currents is then monitored through the use of receiver-coil(s), or by measuring changes to the alternate current flowing in the primary excitation-coil. The electrical conductivity variations or magnetic permeability of the test-part, or the presence of any discontinuities, will cause a change in eddy current and a corresponding change in phases and amplitude of the measured current. the changes are shown on a screen for easy interpretation. Another method of using the eddy current principle is pulsed eddy current testing. methods are being developed to investigate surfaces through protective coatings, weather sheetings, corrosion products and even the insulation materials. Inspection of surfaces at high temperature are possible with the eddy current technique as it is a non-contact method.

Trinity NDT is your trusted provider of Eddy Current Testing (ECT) services, specializing in the detection of cracks and material defects in a wide range of industries. We are dedicated to ensuring the integrity and safety of critical components and materials through our advanced ECT solutions. Our Eddy Current Testing Services Include: Crack Detection: We utilize high-frequency alternating current to inspect conductive materials, identifying surface and subsurface cracks, corrosion, and other imperfections with precision. Material Sorting and Conductivity Assessment: Trinity NDT can assist you in evaluating material properties, sorting materials, and ensuring quality control in manufacturing processes. Automated Testing: Our state-of-the-art equipment and automated testing solutions provide efficient and accurate inspections, reducing downtime and costs. Customized Services: We tailor our Eddy Current Testing services to suit the specific requirements of your project, offering flexibility and personalized solutions. Industry Expertise: With experience in industries like aerospace, automotive, power generation, and more, Trinity NDT is well-equipped to address diverse testing needs. We adhere to stringent quality and safety standards to guarantee the utmost accuracy and reliability in our Eddy Current Testing services. At Trinity NDT, we take pride in contributing to the safety and performance of your projects. Contact us today to learn how Trinity NDT's Eddy Current Testing services can enhance the quality and safety of your materials and components.  

Eddy current testing is performed on non-ferromagnetic materials for surface and sub surface discontinuities, and on ferromagnetic materials for surface breaking discontinuities in accordance with ASME V, BS EN 1711, AS4544 and other Standards. Eddy current testing electrical currents are generated a conductive material by an induced magnetic field. Distortions in the flow of the electric current (eddy currents) caused by imperfections or changes in a materials conductive properties will cause changes in the induced magnetic field. These changes, when detected, indicate the presence of the imperfection or change in the test material.

Test Instrument Capabilities Test channel (coilprobe support) Miz-23-One probecoil(pairs) at one frequency InSite HT- Up to eight coil (pair) at up to eight test frequencies.(64 data channels) InSite CT-Up to eight probes at no more than twotest frequencies.(16 data channels)

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Eddy current testing a modern Nondestructive testing – NDT method that has become one of the primetool for quality control of products, materials and structures at various stages of manufacturing and in-service inspections. Eddy current inspection can be used to find finest surface and subsurface flaws in any conductive material. Spectrums of quality control engineering applications are existing applying Eddy current principles. PresentEddy current NDT method has applications in Aerospace Component Inspections, Heat exchanger tube inspections and other critical engineering applications.

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