MSE Mechanical Testing and Properties Questions &
Correct Answers
1. Elastic deformation is permanent deformation. False
2. Decrease; notice the absorbed energy goes down with The following
curve shows
increasing carbon concentration. That means it ischarpy impact energy ver-
less ductile. sus test temperature
for steels with
ditterent car- bon
concentrations. Does
increasing the
carbon content
increase or de-
crease the ductility of
a steel?
3. At the end of the tensile test of a thermoplastic (above the chains
become
the glass transition temperature, slowly loaded) liquid
the stress increases because transform
s to an
amorphou
4. Elastic deformation in an elastomer occurs by s solid.
(more than one answer is possible)
5. Engineering stress is calculated using the
cross-sec- tional area that changes during the
test.
6. There is a distinct change in density when a
, MSE Mechanical Testing and Properties Questions &
Correct Answers
ligned and additional secondary bonding kicks in
hain dekinking and chain streching
alse
alse
,MSE Mechanical Testing and Properties Questions &
Correct Answers
7. C Tensile test results from
three materials are
shown
, MSE Mechanical Testing and Properties Questions &
Correct Answers
below. Which material
has the greatest
ductility?
8. A: Slowly loaded thermoplastic The tensile test for a
slowly loaded
thermoplastic and a
rapidly loaded thermo-
plastic are shown
below. Match the
curve with the load
rate.
9. B: Rapidly loaded thermoplastic The tensile test for a
slowly loaded
thermoplastic and a
rapidly loaded thermo-
plastic are shown
below. Match the
curve with the load
rate.
Correct Answers
1. Elastic deformation is permanent deformation. False
2. Decrease; notice the absorbed energy goes down with The following
curve shows
increasing carbon concentration. That means it ischarpy impact energy ver-
less ductile. sus test temperature
for steels with
ditterent car- bon
concentrations. Does
increasing the
carbon content
increase or de-
crease the ductility of
a steel?
3. At the end of the tensile test of a thermoplastic (above the chains
become
the glass transition temperature, slowly loaded) liquid
the stress increases because transform
s to an
amorphou
4. Elastic deformation in an elastomer occurs by s solid.
(more than one answer is possible)
5. Engineering stress is calculated using the
cross-sec- tional area that changes during the
test.
6. There is a distinct change in density when a
, MSE Mechanical Testing and Properties Questions &
Correct Answers
ligned and additional secondary bonding kicks in
hain dekinking and chain streching
alse
alse
,MSE Mechanical Testing and Properties Questions &
Correct Answers
7. C Tensile test results from
three materials are
shown
, MSE Mechanical Testing and Properties Questions &
Correct Answers
below. Which material
has the greatest
ductility?
8. A: Slowly loaded thermoplastic The tensile test for a
slowly loaded
thermoplastic and a
rapidly loaded thermo-
plastic are shown
below. Match the
curve with the load
rate.
9. B: Rapidly loaded thermoplastic The tensile test for a
slowly loaded
thermoplastic and a
rapidly loaded thermo-
plastic are shown
below. Match the
curve with the load
rate.
