PT THEORY

3. An indication appearing during penetrant application that is the result of a contaminant.
5. The tendency for a liquid to spread out and adhere to a solid surface.
10. This type of surface is unsuitable for PT inspection because penetrant would be absorbed.
12. A contaminant that adversely affects nickel-based alloys.
14. Appears around an indication if the cleaning wipe is too wet.
15. A discontinuity that renders a part unserviceable for its intended application.

1. Discontinuities that are normal in the material from its original manufacturing process.
2. Substance applied to draw the penetrant out, creating a visible mark.
4. Provides the color, either visible or fluorescent, in the penetrant.
6. The visible result of penetrant being drawn to the surface by the developer.
7. The length of time penetrant is left on the test surface.
8. An indication whose length is less than three times its width.
9. The resistance of a substance to flow.
11. A contaminant that is especially detrimental to stainless steel and titanium alloys.
13. A dry ______ should always be used first when removing excess penetrant.