ENG1008 Materials T2 Tutorial Week 2
Authored by Junning Chen
Professional Development
University
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11 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A notch can improve materials' strengths.
True
False
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
A crash box connects the front bumper and the frame of a car. During a collision, it is squeezed and buckled as shown in the image. Is it likely to experience
Elastic Deformation
Plastic Deformation
Ductile Fracture
Brittle Fracture
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Brittle fracture is more dangerous than ductile fracture because
No warning sign
Large energy absorbed
Crack propagates at very high speeds
Intolerance of extra stress
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What forms in the 2nd stage of fracture in a moderately ductile material?
cracks
microvoids
V-shaped markings
fan-like ridges
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
During coalescence, the microvoids grow and merge along the direction _____ to the applied loading.
parallel
perpendicular
60 degree
45 degree
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Cleavage occurs in
Ductile fracture
Polycrystalline material
After yielding
Transgranular fracture
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The crack propagation feature is seen in
Moderately ductile fracture
Very ductile fracture
Transgranular fracture
Intergranular fracture
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