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Visible dye penetrant (pt)
| Глоссарий терминов по технологиям неразрушающего контроля (NDT) |
An intensely colored (usually red) highly penetrating liquid which will provide maximum contrast with the white developer when used for detection of surface discontinuities.
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Comparative test block (see reference standard), английский
An intentionally cracked metal block having two separate but adjacent areas for the application of different penetrants so that a direct comparison of their relative effectiveness can be obtained. can also be used to evaluate penetrant test techniques or test conditions, or both.
Phase analysis, английский
- An instrumentation technique that discriminates between variables in the test part by the different phase angle changes which these conditions produce in the test signal.
- Analytical technique that discriminates between variables in a part undergoing electromagnetic testing by the different phase angle and amplitude changes that these conditions produce in the test signal. see also phase detection.
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