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Welding Inspection Basics > Destructive Testing > Flashcards

Destructive Testing Flashcards

Master tensile, toughness, hardness, soundness and bend testing of welds.

1
Q

Which hardness test uses a diamond pyramid indenter?

A

Vickers

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2
Q

What type of destructive test is shown here?

A

Vickers hardness

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3
Q

This indentor, shown in magnification, is used for which hardness test?

A

Vickers

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4
Q

For which type of hardness test is the hardness number read directly on a dial?

A

Rockwell

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5
Q

Which destructive test can use 3 different indentors and nine different scales?

A

Rockwell

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6
Q

What type of destructive test is shown here?

A

Rockwell hardness

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7
Q

What indentor is used with the Rockwell B scale?

A

1/16” diameter ball

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8
Q

What type of hardness test uses a minor and major load?

A

Rockwell

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9
Q

Which Rockwell scale uses a 120-degree diamond cone and is used for the hardest materials?

A

Rockwell C scale

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10
Q

For the CWI, the most important difference between types of hardness testing is what?

A

Size of indentor

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11
Q

Brinell, Vickers, Knoop and Rockwell are all types of what destructive test?

A

Hardness

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12
Q

How are BHN (Brinell hardess numbers) calculated?

A

Load/area of indentation

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13
Q

What type of destructive test is shown here?

A

Brinell hardness

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14
Q

For a Brinell hardness test, is the diameter or the depth of the indension measured?

A

Diameter

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15
Q

What does BHN stand for?

A

Brinell hardness number

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16
Q

Which type of hardness test is readily portable?

A

Brinell

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17
Q

For which hardness test is the long axis of the impression measured?

A

Knoop

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18
Q

Which indenter is used for Knoop hardness testing?

A

The left indinter

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19
Q

This indentor, shown in magnification, is used for which hardness test?

A

Knoop

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20
Q

What does KHN stand for?

A

Knoop hardness number

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21
Q

What destructive test is shown here?

A

Rockwell hardness

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22
Q

Which hardness tests can measure microhardness?

A

Vickers and Knoop

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23
Q

Can Rockwell hardness numbers be converted to Brinell hardness number?

A

Yes

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24
Q

What is the hardest material found in nature?

A

Diamond

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25
Q

What is the most common test used for welder qualification?

A

Bend test

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26
Q

Bend tests may be prepared to evaluate which surfaces of the weld?

A

Side, root and/or face

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27
Q

In general, what type of bend test is used for materials 3/8” thick and less?

A

Root and face

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28
Q

What surface is evaluated on a bend specimen?

A

The convex surface

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29
Q

What type of bend test is shown here?

A

Longitudinal face bend

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30
Q

In general, thick materials will be prepared for what type of bend test?

A

Transverse side

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31
Q

What type of bend test is shown here?

A

Longitudinal root and face

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32
Q

What type of bend testing equipment is shown here?

A

Plunger-type bend jig

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33
Q

What type of bend testing equipment is being shown here?

A

Wraparound bend jig

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34
Q

What destructive test uses a plunger and die?

A

Bend test

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35
Q

What type of bend test is shown here?

A

Transverse side bend

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36
Q

In general, how wide are root and face bends?

A

1-1/2”

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37
Q

What type of bend test is shown here?

A

Transverse side bend

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38
Q

For bend testing, hardened steels will require a ______ bend radius than normal carbon steel.

A

Wider (or larger)

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39
Q

The width of a side bend is equal to ________ ?

A

The material’s thickness

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40
Q

What type of bend test equipment is shown here?

A

Wraparound bend jig

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41
Q

Transverse bend tests may be prepared in which two ways?

A

Root and face or side

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42
Q

Which testing method uses a pendulum and a notched specimen?

A

CVN (toughness)

charpy V-notch

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43
Q

Which test method finds a materials absorption of energy?

A

CVN (toughness)

charpy V-notch

44
Q

What destructive test are these specimen from?

A

CVN (toughness)

charpy V notch

45
Q

What type of destructive test uses a standard specimen 55 mm long and 10 mm square?

A

CVN (touhgness)

charpy V-notch

46
Q

What destructive test measures a materials toughness?

A

CVN

charpy V-notch

47
Q

What type of destructive testing is used to determine a welds impact strength and notch toughness?

A

CVN (toughness)

charpy V-nothc

48
Q

The LAST (lowest anticipated service temperature) requirement applies to which destructive test?

A

CVN (toughness)

charpy V-notch

49
Q

Toughness test specimen are often cooled in liquid nitrogen, which has a temperature of:

50
Q

The acronym LAST stands for:

A

Lowest anticipated service temperature

51
Q

What unit of measure is used to express the results of a toughness test?

A

Footpounds

52
Q

What type of destructive test is shown here?

A

CVN (toughness)

charpy V notch

53
Q

If a toughness test specimen is still in one piece after the test is completed, the material has a high _______.

54
Q

What is the equation for UTS (ultimate tensile strength)?

A

Load / area

55
Q

The ‘offset method’ is used to determine what property?

A

Yield strength

56
Q

If a metal has a high percentage of elongation, it is high in what metallurgical property?

57
Q

This graph is the result of what type of destructive testing?

58
Q

What are the two places a tensile test specimen may break in?

A

Weld or base metal

59
Q

Which number is pointing to the plastic region?

60
Q

Are these specimen examples of a ductile or brittle fracture?

61
Q

Which number is pointing to the yield point?

62
Q

Which number is pointing to the elastic region?

63
Q

For what type of destructive test is the specimen clamped at each end by jaws?

64
Q

Tensile specimen may be prepared in what geometric shapes?

A

Round, square or rectangular

65
Q

Gauge marks are put on tensile specimen and measured before and after the test to determine what?

A

Percent elongation

66
Q

What destructive test is shown here?

67
Q

These are specimen of what type of destructive test?

68
Q

Yield strength, toughness, ductility, percent elongation, elastic limit, and percent reduction of area can all be found from what type of destructive test?

69
Q

What tensile testing technique is used to determine the yield strength of very hard materials?

A

Offset method

70
Q

The abbreviation UTS stands for:

A

Ultimate tensile strength

71
Q

What is the equation for area of a square or rectangular tensile specimen?

A

width x thickness

72
Q

A fatigue test is used to find a materials:

A

Endurance limit (fatigue strength)

73
Q

What destructive test may go through an infinite number of loading cycles?

A

Fatigue testing

74
Q

What type of destructive test involves bending a specimen back and forth until it fails?

A

Fatigue test

75
Q

This sample, viewed under no magnification, is an example of what type of metallographic test?

A

Macro-etch

76
Q

The metallographic test in which a specimen is prepared with a fine finish, etched, and examined using no magnification or low magnification is called:

A

A macro-etch

77
Q

Micro-etch specimen are examined using at least ________ magnification.

78
Q

Macro-etch specimens are examined using less than _______ magnification.

79
Q

This sample is an example of what type of destructive test?

A

Metallographic (micro-etch)

80
Q

Hydrochloric acid, ammonium persulphate, or nitric acid can be used for what destructive test?

A

Metallographic (micro-etch or macro-etch )

81
Q

Examining a weld specimen with an electron beam microscope is an example of what type of destructive test?

A

Metallographic (micro-etch)

82
Q

Metallographic tests fall into which two catagories?

A

Micro-etch or macro-etch

83
Q

What destructive test is shown here?

A

Metallographic

84
Q

What type of destructive test is used to evaluate the type of microstructure present in a metal?

A

Metallographic

85
Q

The nick break test is primarily used to qualify welders to what code?

86
Q

What destructive test is shown here?

A

Nick break

87
Q

Can nick break and bend tests be done in the field?

88
Q

What destructive test is shown here?

89
Q

The nick break test is used to find what metallurgical property of the weld?

90
Q

Which material property can tensile, bend, nick break and fillet break all determine?

91
Q

A press, testing machine, or hammer blows may be used for what destructive test?

A

Fillet break

92
Q

What destructive test is shown here?

A

Fillet break

93
Q

This fillet weld macro-etch can be used to measure what?

A

Theoretical, actual and effective throat, size, and depth of penetration.

94
Q

What destructive test is shown here?

A

Fillet break test

95
Q

What destructive test is used mostly on spot and braze welds?

96
Q

Part of a projection, seam or spot weld, including all or part of the nugget, that is torn out during destructive testing is called:

A

The button

97
Q

What type of weld is being tested here?

A

Spot welds

98
Q

What destructive test is shown here?

99
Q

What is the opposite of parallel (another word for perpendicular)?

A

Transverse

100
Q

What type of destructive test is shown here?

A

Stud weld test

101
Q

What type of destructive test is shown here?

A

Torque test

102
Q

Corrosion requirements are mainly set by what code body?

A

NACE

National Association of Corosion Engineers

103
Q

What type of destructive test is especially concerned with H2S sour gas service?

A

Corrosion testing

104
Q

Bend, tensile, hardness and impact are all types of what testing?

A

Destructive

105
Q

This bend specimen failed because of what?

A

Lack of fusion

106
Q

What type of a test has been executed here?

A

Tensile (tension) test

Welding Inspection Basics (9 decks)

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