TEP WCI 6

Liquid penetrant testing is capable of detecting:

• intergranular stress corrosion cracking discontinuities

• Internal defects
• Surface-breaking defects
• Sub-surface defects

The term used to define the tendency of certain liquids to penetrate into small openings such as cracks or fissures is:

• saturation

• capillary action

• blotting

• wetting agent

A penetrant inspection cannot find:

• surface porosity

• surface cracks

• an internal cavity

• a surface forging lap

Which of the following are commonly accepted methods for applying penetrant?

• dipping the part in penetrant (dipping)

• pouring the penetrant over the test specimen (flowing)

• spraying the penetrant on the test specimen (spraying)

• all answers are correct

The penetrant applied to the surface of a test specimen:

• seeps into discontinuities

• is absorbed by discontinuities

• is drawn into discontinuities by capillary action

• is drawn into discontinuities by gravity

A solvent used to clean the surface of a test specimen must possess all of the following characteristics except that the:           

• cleaner must be capable of dissolving oils and greases commonly found on the surface 

• cleaner must not be flammable

• cleaner must be free of contaminants

• cleaner must leave a minimal residue on the surface