NDT Portable Magnetic Coil

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    The ED-400 Portable Eddy Current Test- ing Unit from Centurion NDT , Inc. is small enough to be carried in one hand and is capable of detecting surface cracks or similarflaws as small as 0.005 in. deep in ferromagnetic materials. The unique "cross- coil " probe de- sign renders the instrument virtually insensitive to background changes in magnetic permeability and requires no compensation for "lift-off' effect.
  • http://www.ndt.net/article/wcndt2008/papers/506.pdf
    NDT -methods Magnetic Particle Testing 2.1 Magnetization 2.1.1 Current flow 2.1.1.1 … … 2 Adjacent conductor(s) 2.1.2.3 Fixed installation 2.1.2.4 Portable electromagnet (Yoke) 2.1.2.5 Flexible coil 2.1.3 Permanent …
  • First-generation SQUID-based nondestructive testing system
    … currently not feasible in an all-HTS system, and it will always be inconvenient for portable equipment. … flaw detection by static field mapping may be possible using a stabilised normal coil of minimised diameter. … electrical discontinuities using eddy currents [SI or AC field measurement 1201, or as magnetic discontin- uities using … … make the task of inverse processing easier and the goal of quantitative (electro) magnetic NDT more approachable.
  • An automated self-calibrated instrument for nondestructive testing on conductive materials
    An important feature of the assembled instrument is its built-in self-calibration capability, which allows the mag- netic noise and dc fields present in any industrial environment to be dynamically compensated, thereby rendering the instrument completely portable . THE NDT INSTRUMENT In brief, the fluxset sensor is based on two coils (a driving coil and a pickup coil …
  • http://www.ndt.net/article/wcndt2004/pdf/eddy_current/77_muzhitskiy.pdf
    Portable microprocessor systems allow to produce compact devices which have lots of possibilities of processing in digital … Another achievement is new magnetic materials, e.g. ferrum-niodim-boron, which create strong local magnetic field. Besides, long experimental and theoretical researches the optimal design of excitation and receiving coils and their positional … On the above achievements we designed two devices to solve different tasks of NDT which were problematic …
  • An Opening Electric-MFL Detector for the NDT of In-Service Mine Hoist Wire
    … tromagnetic excitation or nondestructive testing for the endless objects, such as railway and coiled tubing in service. Index Terms—Nondestructively testing ( NDT ), opening electric- magnetic flux leakage (MFL) detector, opening electric magnetizer, mine hoist wire rope, in-service. … ring structures to encompass, unlike the off-line ropes commonly detected by using portable magnet-MFL (magnetic …
  • Defect Characterization With Eddy Current Testing Using Nonlinear-Regression Feature Extraction and Artificial Neural Networks
    The application of NDT techniques to metallic parts is a common practice in the aerospace [4], railway … Because of their high sensitivity and portable instrumentation, ultrasonic and eddy current techniques are the most commonly … Eddy current testing (ECT) is based on the magnetic induc- tion and sensing of electrical currents on … In its simplest form, the technique relies on positioning a coil , the so-called probe, over the …
  • Eddy currents testing defect characterization based on non-linear regressions and artificial neural networks
    The application of NDT techniques to metallic parts is a common practice in the aerospace [3], railway … Because of their high sensitivity and portable instrumentation the ultra- sonic and eddy current techniques are the … Eddy current testing (ECT) is based on the magnetic induction and sensing of electrical currents on the … In their simplest form, the technique relies on positioning a coil , the so called probe, over the …
  • Magnetostrictive delay lines: engineering theory and sensing applications
    … F, Rivero G, Vazquez M, Ascasibar E and Hernando A 1991 Amorphous wire magnetic field and dc … [152] Altpeter I, Theiner W A, Schneider E, Pritchard S E and Silk M G 1996 Non-destructive evaluation of stress states in steels NDT &E Int. 29 342 [153] Sasada … … testing using cross-coupled figure-eight coils IEEE Trans. Magn. … A 68 447–53 [155] Parakka A and Jiles D C 1995 Magneprobe: A portable system for non …
  • http://www.ndt.net/article/wcndt2012/papers/652_wcndtfinal00675.pdf
    The following NDT techniques and equipment were used for testing at the centre and on site. 2.1.1 Magnetic Particle Inspection A bench unit (see figure 1) with fixed coil , prods, ultra violet inspection lamps, fluorescent ink tank … Portable coils, articulate leg electromagnetic AC yokes and ultra violet inspection lamps were employed for base and …