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    Magnetic Flux Leakage

    Magnetic Flux Leakage

    As with MPI, the ferromagnetic specimen is magnetised and depending upon the level of induced flux density, magnetic flux leakage due to both near- and far-surface flaws is detected by the voltage induced in a detector coil, which is traversed over the surface of the specimen. Unlike MPI, the method is not limited to surface-breaking or near-surface flaws, but actually becomes increasingly sensitive to far-surface flaws with increasing levels of magnetisation. Also, the output from the detector can be amplified, filtered, digitised, etc and stored to produce semi-automated inspection systems. The method is widely used on tube stock with both rotating specimens and rotating probes

    • Manufacturing Forging, Friction Welding, Mechanical Testing,, Inspection, etc.
    • Environmental Conditions Well configuration, Chemical, Pressure, Basic Drilling Operations, etc.
    • Make-up Drill Pipe, BHA, Handling Tools, Practices, etc.
    • Fatigue & Failure Modes Chemical, Tension, Torsion, Compression, Cyclic, Harmonics, etc.
    • Equipment & Applications EMI (TDS, LDS, Wall, Grade) Magnetic Field, Gain, Signal responses, etc.
    • Procedures Industry, Client, Manufacturer, Interpretation, Ambiguities, Categories, Classifications, etc.
    • Qualification Personnel, Equipment, Calibrations, Practices, etc.
    • Marking Identification, Classification, Color Coding, Stenciling, etc.
    • Reporting Recording, Documenting, Formatting, Abbreviations, Acceptance Criteria’s, etc.