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  2. SIUI - Wikipedia

    en.wikipedia.org/wiki/SIUI

    SIUI develops and manufactures a variety of ultrasound imaging systems and accessories for both human and veterinary use, and NDT equipment including phased-array ultrasonic flaw detector, [3] conventional flaw detector, [4] thickness gauge, probes [5] and accessories. The company is currently organized into three product category divisions ...

  3. Rail inspection - Wikipedia

    en.wikipedia.org/wiki/Rail_inspection

    One effect that can cause crack propagation is the presence of water and other liquids. When fluid fills a small crack and a train passes over, the water becomes trapped in the void and can expand the crack tip. Also, the trapped fluid could freeze and expand or initiate the corrosion process. Parts of a rail where defects can be found: head ...

  4. Ultrasonic testing - Wikipedia

    en.wikipedia.org/wiki/Ultrasonic_testing

    The patent is granted on April 21, 1942 as U.S. Patent No. 2,280,226, titled "Flaw Detecting Device and Measuring Instrument". Extracts from the first two paragraphs of the patent for this entirely new nondestructive testing method succinctly describe the basics of such ultrasonic testing.

  5. Dye penetrant inspection - Wikipedia

    en.wikipedia.org/wiki/Dye_penetrant_inspection

    The dwell time mainly depends upon the penetrant being used, the material being tested and the size of flaws sought. As expected, smaller flaws require a longer penetration time. Due to their incompatible nature, one must be careful not to apply solvent-based penetrant to a surface which is to be inspected with a water-washable developer. 3.

  6. Nondestructive testing - Wikipedia

    en.wikipedia.org/wiki/Nondestructive_testing

    Probability of detection (POD) tests are a standard way to evaluate a nondestructive testing technique in a given set of circumstances, for example "What is the POD of lack of fusion flaws in pipe welds using manual ultrasonic testing?" The POD will usually increase with flaw size.

  7. Fluorescent penetrant inspection - Wikipedia

    en.wikipedia.org/wiki/Fluorescent_penetrant...

    Liquid penetrant inspection of non-magnetic aircraft metal parts. Fluorescent penetrant inspection (FPI) is a type of dye penetrant inspection in which a fluorescent dye is applied to the surface of a non-porous material in order to detect defects that may compromise the integrity or quality of the part in question.

  8. Eddy-current testing - Wikipedia

    en.wikipedia.org/wiki/Eddy-current_testing

    If the material contains a crack or flaw which make the spatial distribution of the electrical conductivity nonuniform, the path of the eddy currents is perturbed and the impedance of the coil which generates the AC magnetic field is modified. By measuring the impedance of this coil, a crack can hence be detected.

  9. Magnetic particle inspection - Wikipedia

    en.wikipedia.org/wiki/Magnetic_particle_inspection

    Wet system particle range in size from less than 0.5 micrometres to 10 micrometres for use with water or oil carriers. Particles used in wet systems have pigments applied that fluoresce at 365 nm (ultraviolet A) requiring 1000 μW/cm 2 (10 W/m 2) at the surface of the part for proper inspection.

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