CWB Module 12 Mechanical Testing of Welds CORRECT 100%
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Course
CWB Module 12 Mechanical T
Institution
CWB Module 12 Mechanical T
Exercise Questions - Section 2
1. When a metal is subjected to load, it will be resisted by internal forces within the metal. The intensity of these forces through a given plane is known as ___________ - ANSWERStress
Exercise Questions - Section 2
2. Select the 3 ways in which a load can ...
1. When a metal is subjected to load, it will be resisted by internal forces within the
metal. The intensity of these forces through a given plane is known as ___________
- ANSWERStress
Exercise Questions - Section 2
2. Select the 3 ways in which a load can act on a cross-sectional area in a body
Strain is the extension divided by the original length - ANSWERTrue
Exercise Questions - Section 2 & 3
1. If a plot of stress against strain is made for a bar that undergoes plastic
deformation, the stress at which a permanent set is first recorded when the bar is
unloaded is known as:
a) permanent set
b) strain
c) the elastic limit
d) the proportional limit - ANSWERc) the elastic limit
, Exercise Questions - Section 2 & 3
2. True or False
Stress is load divided by the original cross sectional area - ANSWERTrue
Exercise Questions - Section 2
4. The modulus of elasticity, E, for steel is usually taken as:
a) 2000 MPa
b) 200,000 MPa
c) 200 MPa
d) 2,000,000 MPa
e) 29,000 MPa - ANSWERb) 200,000 MPa
Exercise Questions - Section 2 & 3
3. To carry out tensile tests, special machines are needed to exert the necessary
force. They are generally 2 types: ________ and _______________. -
ANSWERMechanical and hydraulic
Exercise Questions - Section 2 & 3
4. If it is desired to measure the strain during a test, an _________________ is
placed on the specimen. - ANSWERExtensometer
Exercise Questions - Section 4
1. Name 3 types of guided bend tests? - ANSWERa) Face bend
b) Root bend
c) Side bend
Exercise Questions - Section 4
2. After bending, the welds are examined for flaws or cracks. It is a condition of
almost all codes that the specimens shall be considered to have failed if, on
examination of the convex surface after bending, there is a crack or open defect
exceeding _____________mm in length measured in any direction - ANSWER3
Exercise Questions - Section 4
3. What is the purpose of a nick break test? - ANSWERTo reveal internal weld
defects
Exercise Questions - Section 5
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