Results 211 to 220 of about 15,604 (261)
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Eddy current testing of metals
Materials & Design, 1987Abstract Eddy currents can be used for testing metals for changes in composition, structure and hardness, and for detecting and measuring surface and sub-surface defects. They can also be applied to measuring changes in dimensions of rods and tubes and of thickness of metal plates and of non-metallic coatings on metal substrates and of metal coatings
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Pulsed Eddy-Current Nondestructive Testing of Ferromagnetic Tubes
IEEE Transactions on Instrumentation and Measurement, 2004In sinusoidal eddy current nondestructive testing (NDT) of thick ferromagnetic tubes, wall thickness is measured with the coils displaced for 2-3 tube diameters (remote field eddy current technique). The tube inner diameter is measured at higher frequency with another pair of coils displaced for around 1 tube diameter (electrical caliper).
Darko Vasic +2 more
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Eddy current testing instruments
Physics Bulletin, 1988Eddy current testing is a means of nondestructively testing electrically conducting materials and is most widely used for production and in-service testing of high integrity components and structures such as nuclear reactor tubing and airframe fastener joints.
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Improvement of Eddy Current Distribution Induced by Exciting Coil in Eddy Current Testing
2006 12th Biennial IEEE Conference on Electromagnetic Field Computation, 2006Eddy current testing (ECT) using sinusoidal excitation is practical in various fields and its electromagnetic phenomena is becoming clear by using numerical analysis. On the other hand, some problems are remained in ECT technology: for example, high-sensitivity detection, testing for magnetic material, thick structure. In this paper, in order to obtain
H. Tsuboi, N. Seshima
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Characterization of an eddy-current-based system for nondestructive testing
IEEE Transactions on Instrumentation and Measurement, 2002A low-cost probe for nondestructive testing of conductive materials was set up and tested. It is based on the measurement of the magnetic field produced by eddy currents (ECs) and perturbed by the presence of cracks. The magnetic sensor used, characterized by the authors in a previous work, gives an output that, suitably processed, allow both the ...
Andrea Bernieri +2 more
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Electrical Test Methods (Eddy Current Testing)
1988The basic principle underlying the electrical test methods is that electrical eddy currents and/or magnetic effects are induced within the material or component under test and, from an assessment of the effects, deductions can be made about the nature and condition of the testpiece.
Barry Hull, Vernon John
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Electromagnetic (Eddy Current) Testing
1992This paper will cover the electromagnetic (eddy current) testing method and ASTM Subcommittee E7.07 on Electromagnetic Method and its activities. The basic principles and applications of the test method are discussed. The advantages and disadvantages are noted.
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Eddy Current and Magnetic Testing of Magnetic Material by Uniform Eddy Current Probe
AIP Conference Proceedings, 2005Uniform eddy current probe comprised of an exciting tangential coil and a detecting pancake coil simultaneously conducts eddy current testing and magnetic testing of magnetic material. The eddy current testing detects parallel flaws to the magnetic flux and the magnetic testing detects perpendicular flaws.
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High resolution eddy current inspection and eddy current testing for additive manufacturing
2016Non-destructive testing (NDT) is one of the key method developed for the safety mechanism of many industrial fields, e.g. aerospace, oil and gas and power industries. Among the NDT techniques, eddy current testing belongs to the well-established ones and has been used since the 1940s.
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