PT THEORY

3. An indication whose length is less than three times its width.
6. A discontinuity that renders a part unserviceable for its intended application.
8. An indication appearing during penetrant application that is the result of a contaminant.
10. A contaminant that is especially detrimental to stainless steel and titanium alloys.
11. The length of time penetrant is left on the test surface.
12. The resistance of a substance to flow.
14. This type of surface is unsuitable for PT inspection because penetrant would be absorbed.

1. A contaminant that adversely affects nickel-based alloys.
2. The tendency for a liquid to spread out and adhere to a solid surface.
4. Discontinuities that are normal in the material from its original manufacturing process.
5. Provides the color, either visible or fluorescent, in the penetrant.
6. Substance applied to draw the penetrant out, creating a visible mark.
7. A dry ______ should always be used first when removing excess penetrant.
9. Appears around an indication if the cleaning wipe is too wet.
13. The visible result of penetrant being drawn to the surface by the developer.