Многие термины и определения в этом глоссарии взяты из «Справочника по неразрушающему контролю»
| artificial discontinuity | Reference point, such as a hole, groove, implant or notch, that are introduced into a reference standard to provide accurately reproducible sensitivity levels for nondestructive test equipment. a ... |
| artificial discontinuity standard | - See acceptance standard.
- See acceptance standard. 556 ultrasonic testing part 1. terms a-scan: one-dimensional display of ultrasonic signal amplitude as function of time or depth in...
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| background signal | Steady or fluctuating output signal of a test instrument caused by the presence of acoustic, chemical, electrical or radiation conditions to which the sensing element responds.1 background tempera... |
| calibration accuracy | Accuracy to which a calibration is performed, usually based on the accuracy and sensitivity of the instruments and references used in the calibration.3 |
| calibration reflector | - Reflector with a known dimensioned surface established to provide an accurately reproducible reference level.1 calibration source, infrared: blackbody or other target of known temperature and ...
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| colored body | See nongraybody. |
| continuous annealing furnace | Furnace in which castings are heat treated, by being passed through different heat zones kept at constant temperatures.1 |
| diffuse reflector | Surface that reflects a portion of the incident radiation in such a manner that the reflected radiation is equal in all directions. a mirror is not a diffuse reflector.3 diffusion, heat: see therm... |
| discernible image | Image capable of being recognized by sight without the aid of magnification.1 |
| environmental rating | Rating given an operating unit (typically an electrical or mechanical enclosure) to indicate the limits of the environmental conditions under which the unit will function reliably and within publi... |
| finite element analysis | Numerical technique for the analysis of a system whereby that system is decomposed into a collection of finite sized elements.1 focal plane array (fpa): linear or twodimensional matrix of detector... |
| focal zone | - Distance before and after the focal point in which the intensity differs a specified amount (usually 6 db) from the focal intensity. also called depth of field or depth of focus.1
- D...
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| frame repetition rate | Time it takes an infrared imager to scan (update) every thermogram picture element (pixel); in frames per second.3 |
