CWB Welding Inspector Level II - Chapter 8 ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Mechanical Testing Of Welds exam with ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
correct answers ||\\||\\
What happens to the notch in the Charpy specimen when it is
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
struck by the pendulum? ||\\||\\ ||\\||\\ ||\\||\\
The notch goes into a twisting moment, causing an initiation of
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
torsion forces ||\\||\\
The notch goes into tension, causing an initiation of fracture
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
from the notch ||\\||\\ ||\\||\\
The notch goes into compression, causing an initiation of
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
fracture from the notch ||\\||\\ ||\\||\\ ||\\||\\
Initiation of fracture from the notch is caused by the pendulum ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
setting up a fatigue crack at the notch root ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
The notch goes into tension, causing an initiation of fracture
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
from the notch ||\\||\\ ||\\||\\
A proof test on a pressure vessel is usually performed using
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
which medium? ||\\||\\
Air
Argon
,Nitrogen
Water
Water
What is an extensometer used for in a tensile test? (Multiple
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Choice)
A) To reveal the ductility of aluminum
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
B) To reviewal internal weld defects
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
C) To measure the strain
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
D) To keep the specimen centred in the jaws
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
C) To measure the strain
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
What is the drop weight test? (Multiple Choice)
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
A) A tension test
||\\||\\ ||\\||\\ ||\\||\\
B) Real world fracture testing
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
C) UTS based on heating
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
D) Reducing sample size for testing
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
B) Real world fracture testing
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Which hardness test is the preferred method of testing both the
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
weld metal and HAZ? (Multiple Choice)
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
A) Brinell hardness test
||\\||\\ ||\\||\\ ||\\||\\
B) Vickers hardness test
||\\||\\ ||\\||\\ ||\\||\\
, C) Rockwell "C" hardness test
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
D) Rockwell "B" hardness test
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
B) Vickers hardness test
||\\||\\ ||\\||\\ ||\\||\\
Which of the following discontinuities have the highest
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
probability of leading to fatigue failure? (Multiple Choice) ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
A) Porosity, incomplete fusion at the centreline of a two-sided
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
joint, and under-welding
||\\||\\ ||\\||\\
B) Overlap, surface undercut, inclusions, and microcracks
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
C) Weld reinforcement, convexity, and porosity
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
D) Under-welding, over-welding, and convexity
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
B) Overlap, surface undercut, inclusions, and microcracks
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
When the stress rises to a maximum value in a tensile test it is
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
known as: (Multiple Choice) ||\\||\\ ||\\||\\ ||\\||\\
A) the ultimate tensile strength of the material.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
B) the yield strength of the material.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
C) the elastic limit of the material.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
D) The stress/strain curve of the material.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
A) the ultimate tensile strength of the material.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Fatigue failure occurs under repeated and fluctuating loads,||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
when stresses are: (Multiple Choice)
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Mechanical Testing Of Welds exam with ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
correct answers ||\\||\\
What happens to the notch in the Charpy specimen when it is
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
struck by the pendulum? ||\\||\\ ||\\||\\ ||\\||\\
The notch goes into a twisting moment, causing an initiation of
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
torsion forces ||\\||\\
The notch goes into tension, causing an initiation of fracture
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
from the notch ||\\||\\ ||\\||\\
The notch goes into compression, causing an initiation of
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
fracture from the notch ||\\||\\ ||\\||\\ ||\\||\\
Initiation of fracture from the notch is caused by the pendulum ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
setting up a fatigue crack at the notch root ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
The notch goes into tension, causing an initiation of fracture
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
from the notch ||\\||\\ ||\\||\\
A proof test on a pressure vessel is usually performed using
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
which medium? ||\\||\\
Air
Argon
,Nitrogen
Water
Water
What is an extensometer used for in a tensile test? (Multiple
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Choice)
A) To reveal the ductility of aluminum
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
B) To reviewal internal weld defects
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
C) To measure the strain
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
D) To keep the specimen centred in the jaws
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
C) To measure the strain
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
What is the drop weight test? (Multiple Choice)
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
A) A tension test
||\\||\\ ||\\||\\ ||\\||\\
B) Real world fracture testing
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
C) UTS based on heating
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
D) Reducing sample size for testing
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
B) Real world fracture testing
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Which hardness test is the preferred method of testing both the
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
weld metal and HAZ? (Multiple Choice)
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
A) Brinell hardness test
||\\||\\ ||\\||\\ ||\\||\\
B) Vickers hardness test
||\\||\\ ||\\||\\ ||\\||\\
, C) Rockwell "C" hardness test
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
D) Rockwell "B" hardness test
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
B) Vickers hardness test
||\\||\\ ||\\||\\ ||\\||\\
Which of the following discontinuities have the highest
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
probability of leading to fatigue failure? (Multiple Choice) ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
A) Porosity, incomplete fusion at the centreline of a two-sided
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
joint, and under-welding
||\\||\\ ||\\||\\
B) Overlap, surface undercut, inclusions, and microcracks
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
C) Weld reinforcement, convexity, and porosity
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
D) Under-welding, over-welding, and convexity
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
B) Overlap, surface undercut, inclusions, and microcracks
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
When the stress rises to a maximum value in a tensile test it is
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
known as: (Multiple Choice) ||\\||\\ ||\\||\\ ||\\||\\
A) the ultimate tensile strength of the material.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
B) the yield strength of the material.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
C) the elastic limit of the material.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
D) The stress/strain curve of the material.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
A) the ultimate tensile strength of the material.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Fatigue failure occurs under repeated and fluctuating loads,||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
when stresses are: (Multiple Choice)
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
