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pt ii > ASNT II > Flashcards

ASNT II Flashcards

1
Q

The speed with which a penetrant penetrates a surface flaw is influenced to the greatest extent by which of the following properties?

A

Viscosity

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2
Q

Which of the statements below concerning the operation of the black light bulbs of the mercury arc type is NOT true?

A

Line voltage variations above 120 volts will have little or no effect on the bulb.

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3
Q

Which of the items listed below is NOT an advantage of the liquid penetrant test method?

A

The method can find all types of discontinuities.

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4
Q

Which of the statements below apply to the liquid penetrant method of testing?

A

The penetrant test method is more reliable than radiographic testing when attempting to detect minute surface discontinuities.

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5
Q

Which of the following types of discontinuities will NOT be detected by the liquid penetrant test method?

A

Internal forging bursts

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6
Q

Which of the following discontinuities could be classified as a primary processing discontinuity often found in cast material.

A

Porosity

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7
Q

Which of the following discontinuities could be classified as a finishing processing discontinuity?

A

Heat-treat crack

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8
Q

Which of the following discontinuities could be classified as a service induced discontinuity?

A

Fatigue crack

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9
Q

Which of the test part characteristics listed below are normally considered before the specific liquid penetrant test method is selected?

A

|A. The kind and size of discontinuities most likely to occur.
|B. The intended application for the part.
|C. The surface finish of the part.
|D. All of the above.
\D

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10
Q

Aluminum alloy test specimens that have been tested by the liquid penetrant method should be thoroughly cleaned after testing because:

A

the alkaline content of wet developers and most emulsifiers

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11
Q

Which of the following are typical of foreign matter which might block the openings of discontinuities if the surface of a test specimen is NOT properly cleaned?

A 
\D
|A.  Paint
|B.  Scale
|C.  Core and mold material
|D.  All of the above
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12
Q

Which of the following is NOT recommended method of removing grease from a surface of a part to be penetrant tested?

A

Hot water rinse

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13
Q

The penetrant indication for a cold shut on the surface of a casting will be:

A

a dotted or smooth continuous line.

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14
Q

The penetrant indication of a forging lap will normally be:

A

a continuous line

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15
Q

When conducting a penetrant test, spherical indications on the surface of a part could be indicative of

A

porosity

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16
Q

Which of the following is NOT a form in which penetrant

developer is commonly available?

A

High viscosity developer

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17
Q

Which of the following is a possible cause for false penetrant indications?

A

Lint or dirt

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18
Q

Penetrant residues may become entrapped under spines, fasteners, rivets, etc. Which of the following is the most likely reaction caused by such a residue?

A

Corrosion caused by the moisture attracted by such residues

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19
Q

Developer assists in the detection of penetrants retained in discontinuities by aiding the

A

bleed-out process

20
Q

Developer assists in the detection of the visible dye penetrant test indications by:

A

providing a contrasting background.

21
Q

When using post-emulsification penetrants, difficulties incurred during the washing operation can be overcome by:

A

completely reprocessing the part from surface preparation on

22
Q

Which of the following methods for applying non-aqueous developer is normally considered most effective?

A

Spraying.

23
Q

Of the methods listed below, the most effective means of precleaning a test item prior to a penetrant test is

A

vapor degreasing.

24
Q

Fluorescent materials used in fluorescent penetrants respond most actively to radiant energy, of a wavelength of approximately:

A

3,650 Angstroms.

25
Q

In liquid penetrant testing when using solvent removable visible dye penetrant, several methods exist for excess penetrant removal from a surface part. Which of the methods is generally more suitable for giving accurate test results?

A

Wiping with dry paper wipes, then wiping with a solvent

26
Q

Prior to penetrant testing of a previously machined soft metal part, which of the cleaning methods listed below would best remove any smeared metal that could mask discontinuities?

A

Etching

27
Q

Which of the following is a purpose of the drying process used in penetrant testing?

A

After the application of a wet developer, the drying process aids in securing a uniform developer coating.

28
Q

Which of the following is the best reason why excessive drying of a part is NOT desired?

A

A reduction in resolution may result.

29
Q

Which of the following is the best reason why the application of emulsifier by a brush is NOT recommended?

A

The brushing action mixes the emulsifier with the penetrant prematurely and irregularly, making accurate control of the emulsification time impossible

30
Q

Developing time depends on the:

A

type of developer used and type of discontinuity to be detected.

31
Q

When using a fluorescent, post-emulsifiable penetrant, the length of time the emulsifier is allowed to remain on the part is critical when detecting shallow scratch-like discontinuities. The best length of time should be:

A

determined by experimentation.

32
Q

Which of the following statements concerning contaminating materials on the surface of a part to be penetrant tested is NOT true?

A

The contaminant may retain the penetrant and thus increase the sensitivity of the inspection.

33
Q

Water-washable liquid penetrants differ from post-emulsification penetrants in that water-washable penetrants:

A

do not need the application of an emulsifier before rinsing.

34
Q

The function of the emulsifier in the post-emulsification

penetrant method is to

A

react with the surface penetrant to make the penetrant water-washable.

35
Q

When penetrant testing for shallow discontinuities using a post-emulsification penetrant, the emulsification times should be long enough to:

A

mix the emulsifier with the excess surface penetrant only

36
Q

Which of the following is NOT good practice when penetrant testing?

A

Applying emulsifier with a brush

37
Q

An important difference between non-water-washable penetrants and water-washable penetrants is that

A

water-washable penetrants contain an emulsifier, while non-water washable penetrants do not.

38
Q

Which of the following characteristics are normally considered when selecting the type of penetrant to be used in a penetrant test?

A 
\D
|A.  Removal characteristics of the penetrant.
|B.  The flash point of the penetrant.
|C.  The cost of the penetrant.
|D.  All of the above.
39
Q

When penetrant testing Titanium alloys, the materials used in the penetrant system should NOT contain any constituent quantities of:

A

halogenated solvents.

40
Q

Which of the following is a discontinuity which might be found in sand castings:

A

Shrinkage

41
Q

Which of the following discontinuities might be found in a welded fabrication?

A

Lack of fusion

42
Q

Which of the following discontinuities might be found in rolled bar stock?

A

Laps

43
Q

Which of the following discontinuities might be found in rolled plate?

A

Laminations

44
Q

Which of the following contaminants could affect the sensitivity of a penetrant.

A 
\D
|A.  Acid
|B.  Water
|C.  Salts
|D.  All of the above.
45
Q

Which of the following is a discontinuity that might be found in a forging?

A

Laps

pt ii (1 decks)

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