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Definitions (724)
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magnetizing force
The total force tending to set up a magnetic flux in a magnetic circuit. It is usually designated by the letter "H"and the unit is the "Oersted."
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cohesive strength
The force that holds together the atoms in metal crystals. Analogous to tensile strength, but on a submicroscopic scale.
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intensifying screen
serif"> - A layer of material placed in contact with the film to increase the effect of the radiation, thus shortening the exposure.
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horseshoe magnet
A bar magnet, bent into the shape of a horse shoe so that the two poles are adjacent. Usually the term applies to a permanent magnet.
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pitting
Small cavities in a metal surface by nonuniform electrodeposition or by corrosion.
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b-scan
serif"> - A data presentation method applied to pulse echo techniques. It produces a two-dimensional view of a cross-sectional plane through the test object. The horizontal sweep is proportion [..]
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back reflection
serif">- The signal received from the far boundary or back surface of a test object.
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background
The visual, radiographic or electronic response against which an indication from a discontinuity must be viewed.
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background fluorescence
Fluorescent residues observed over the general surface of the part during fluorescent penetrant inspection.
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background noise
The extraneous signals caused by random signal sources within or exterior to the ultrasonic testing system, including the test material. Sometimes called grass or hash.
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