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
2
Q
What type of destructive test is shown here?
A
Vickers hardness
3
Q
This indentor, shown in magnification, is used for which hardness test?
A
Vickers
4
Q
For which type of hardness test is the hardness number read directly on a dial?
A
Rockwell
5
Q
Which destructive test can use 3 different indentors and nine different scales?
A
Rockwell
6
Q
What type of destructive test is shown here?
A
Rockwell hardness
7
Q
What indentor is used with the Rockwell B scale?
A
1/16” diameter ball
8
Q
What type of hardness test uses a minor and major load?
A
Rockwell
9
Q
Which Rockwell scale uses a 120-degree diamond cone and is used for the hardest materials?
A
Rockwell C scale
10
Q
For the CWI, the most important difference between types of hardness testing is what?
A
Size of indentor
11
Q
Brinell, Vickers, Knoop and Rockwell are all types of what destructive test?
A
Hardness
12
Q
How are BHN (Brinell hardess numbers) calculated?
A
Load/area of indentation
13
Q
What type of destructive test is shown here?
A
Brinell hardness
14
Q
For a Brinell hardness test, is the diameter or the depth of the indension measured?
A
Diameter
15
Q
What does BHN stand for?
A
Brinell hardness number
16
Q
Which type of hardness test is readily portable?
A
Brinell
17
Q
For which hardness test is the long axis of the impression measured?
A
Knoop
18
Q
Which indenter is used for Knoop hardness testing?
A
The left indinter
19
Q
This indentor, shown in magnification, is used for which hardness test?
A
Knoop
20
Q
What does KHN stand for?
A
Knoop hardness number
21
Q
What destructive test is shown here?
A
Rockwell hardness
22
Q
Which hardness tests can measure microhardness?
A
Vickers and Knoop
23
Q
Can Rockwell hardness numbers be converted to Brinell hardness number?
A
Yes
24
Q
What is the hardest material found in nature?
A
Diamond
25
What is the most common test used for welder qualification?
Bend test
26
Bend tests may be prepared to evaluate which surfaces of the weld?
Side, root and/or face
27
In general, what type of bend test is used for materials 3/8" thick and less?
Root and face
28
What surface is evaluated on a bend specimen?
The convex surface
29
What type of bend test is shown here?
Longitudinal face bend
30
In general, thick materials will be prepared for what type of bend test?
Transverse side
31
What type of bend test is shown here?
Longitudinal root and face
32
What type of bend testing equipment is shown here?
Plunger-type bend jig
33
What type of bend testing equipment is being shown here?
Wraparound bend jig
34
What destructive test uses a plunger and die?
Bend test
35
What type of bend test is shown here?
Transverse side bend
36
In general, how wide are root and face bends?
1-1/2"
37
What type of bend test is shown here?
Transverse side bend
38
For bend testing, hardened steels will require a ______ bend radius than normal carbon steel.
Wider (or larger)
39
The width of a side bend is equal to ________ ?
The material's thickness
40
What type of bend test equipment is shown here?
Wraparound bend jig
41
Transverse bend tests may be prepared in which two ways?
Root and face or side
42
Which testing method uses a pendulum and a notched specimen?
CVN (toughness)
charpy V-notch
43
Which test method finds a materials absorption of energy?
CVN (toughness)
charpy V-notch
44
What destructive test are these specimen from?
CVN (toughness)
charpy V notch
45
What type of destructive test uses a standard specimen 55 mm long and 10 mm square?
CVN (touhgness)
charpy V-notch
46
What destructive test measures a materials toughness?
CVN
charpy V-notch
47
What type of destructive testing is used to determine a welds impact strength and notch toughness?
CVN (toughness)
Charpy V-notch
48
The LAST (lowest anticipated service temperature) requirement applies to which destructive test?
CVN (toughness)
charpy V-notch
49
Toughness test specimen are often cooled in liquid nitrogen, which has a temperature of:
-322 F
50
The acronym LAST stands for:
Lowest anticipated service temperature
51
What unit of measure is used to express the results of a toughness test?
Footpounds
52
What type of destructive test is shown here?
CVN (toughness)
charpy V notch
53
If a toughness test specimen is still in one piece after the test is completed, the material has a high \_\_\_\_\_\_\_.
Ductility
54
What is the equation for UTS (ultimate tensile strength)?
Load / area
55
The 'offset method' is used to determine what property?
Yield strength
56
If a metal has a high percentage of elongation, it is high in what metallurgical property?
Ductility
57
This graph is the result of what type of destructive testing?
Tensile
58
What are the two places a tensile test specimen may break in?
Weld or base metal
59
Which number is pointing to the plastic region?
4
60
Are these specimen examples of a ductile or brittle fracture?
Brittle
61
Which number is pointing to the yield point?
3
62
Which number is pointing to the elastic region?
5
63
For what type of destructive test is the specimen clamped at each end by jaws?
Tensile
64
Tensile specimen may be prepared in what geometric shapes?
Round, square or rectangular
65
Gauge marks are put on tensile specimen and measured before and after the test to determine what?
Percent elongation
66
What destructive test is shown here?
Tensile
67
These are specimen of what type of destructive test?
Tensile
68
Yield strength, toughness, ductility, percent elongation, elastic limit, and percent reduction of area can all be found from what type of destructive test?
Tensile
69
What tensile testing technique is used to determine the yield strength of very hard materials?
Offset method
70
The abbreviation UTS stands for:
Ultimate tensile strength
71
What is the equation for area of a square or rectangular tensile specimen?
width x thickness
72
A fatigue test is used to find a materials:
Endurance limit (fatigue strength)
73
What destructive test may go through an infinite number of loading cycles?
Fatigue testing
74
What type of destructive test involves bending a specimen back and forth until it fails?
Fatigue test
75
This sample, viewed under no magnification, is an example of what type of metallographic test?
Macro-etch
76
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 macro-etch
77
Micro-etch specimen are examined using at least ________ magnification.
10X
78
Macro-etch specimens are examined using less than _______ magnification.
10X
79
This sample is an example of what type of destructive test?
Metallographic (micro-etch)
80
Hydrochloric acid, ammonium persulphate, or nitric acid can be used for what destructive test?
Metallographic (micro-etch or macro-etch )
81
Examining a weld specimen with an electron beam microscope is an example of what type of destructive test?
Metallographic (micro-etch)
82
Metallographic tests fall into which two catagories?
Micro-etch or macro-etch
83
What destructive test is shown here?
Metallographic
84
What type of destructive test is used to evaluate the type of microstructure present in a metal?
Metallographic
85
The nick break test is primarily used to qualify welders to what code?
API 1104
86
What destructive test is shown here?
Nick break
87
Can nick break and bend tests be done in the field?
Yes
88
What destructive test is shown here?
Nick beak
89
The nick break test is used to find what metallurgical property of the weld?
Soundness
90
Which material property can tensile, bend, nick break and fillet break all determine?
Soundness
91
A press, testing machine, or hammer blows may be used for what destructive test?
Fillet break
92
What destructive test is shown here?
Fillet break
93
This fillet weld macro-etch can be used to measure what?
Theoretical, actual and effective throat, size, and depth of penetration.
94
What destructive test is shown here?
Fillet break test
95
What destructive test is used mostly on spot and braze welds?
Peel test
96
Part of a projection, seam or spot weld, including all or part of the nugget, that is torn out during destructive testing is called:
The button
97
What type of weld is being tested here?
Spot welds
98
What destructive test is shown here?
Peel test
99
What is the opposite of parallel (another word for perpendicular)?
Transverse
100
What type of destructive test is shown here?
Stud weld test
101
What type of destructive test is shown here?
Torque test
102
Corrosion requirements are mainly set by what code body?
NACE
National Association of Corosion Engineers
103
What type of destructive test is especially concerned with H2S sour gas service?
Corrosion testing
104
Bend, tensile, hardness and impact are all types of what testing?
Destructive
105
This bend specimen failed because of what?
Lack of fusion
106
What type of a test has been executed here?
Tensile (tension) test
