Liquid Penetrent PT Flashcards Preview

NDT Methods > Liquid Penetrent PT > Flashcards

Flashcards in Liquid Penetrent PT Deck (30):
1

Aids in drawing any trapped penetrant from discontinuities and slightly spreading that penetrant on the test surfaces to improve the visibility of indications

Developer

2

Dye penetrant that contains fluorescent dye that emits a yellowish green light when exposed to ultraviolet or near ultraviolet light

Fluorescent penetrant

3

Penetrant dye visible under natural or white light

Visible penetrant

4

Dye penetrant containing dyes that are both colored under white light and fluorescent under ultraviolet light

Dual mode penetrant

5

Emulsifier that are liquid blends that combined with oil base penetrants to form a mixture that can be removed with the water spray

Lipophilic

6

Emulsifiers often referred to as removers are composed of emulsifying agents dissolved in water and your supply in the concentrated form

Hydrophilic

7

Increase the brightness intensity of fluorescent penetrant indications and the contrast of visible penetrant indications

Developers

8

The ability to detect discontinuities in liquid penetrant inspection

Sensitivity

9

Most reliable penetrant testing method is

Postemulsifiable Method (D)

10

This method is useful when water cannot be conveniently used or when the penetrant materials must be taken to the part

Solving removable method

11

This method requires less time to complete then other methods and does not require a pre-rinse or an emulsifier.

Water washable method

12

Water washable method designation

Method A

13

Post emulsifiable lipophilic designation

Method B

14

Solvent removable designation

Method C

15

Post emulsifiable hydrophilic designation

Method D

16

The tendency of a liquid penetrant to enter a discontinuity is primarily related to

Capillary forces

17

The property of a dye used in penetrant materials to emit light of a range of wavelengths different from the wavelength of light that excites the emission is called

Florescence

18

Penetrant system is generally considered the least sensitive

Water washable; visible die

19

In penetrant testing, scattered round indications on the surface of a part can be indicative of

Porosity

20

The total time that the penetrant is in contact with the parts surface is called the

Dwell

21

Require a separate emulsifier to break the penetrant down and make it water washable

Post emulsified penetrants

22

Which developer is commonly considered as the least sensitive

Dry developer

23

A liquid that interacts with an oily substance to make it water washable

Emulsifier

24

The term used to describe the action of a particular developer in soaking up the penetrant in a discontinuity, so as to cause the maximum bleed out the liquid penetrant for increased contrast and sensitivity is known as

Blotting

25

Fluorescent penetrant is type

Type I

26

Visible penetrant is type

Type II

27

The specific gravity of what developer is measured with a

Hydrometer

28

What instrument is used to check hydrophilic emulsifier concentration

Refractometer

29

The test used to measure the sensitivity of a penetrant to water contamination based on the amount of water is the

Water tolerance test

30

Light reflected by the background as opposed to the amount of light reflected by the dye

Contrast ratio