MAT E 202 Test Questions with Verified Correct
Answers
MP & Fracture toughness of CERAMICS:
HIGH MP, LOW Fracture Toughness
Bonding of POLYMERS
covalent
Tensile strain is the same as:
Longitudinal/Parallel Strain
What can miller indices NOT contain?
non integers (no fractions)
What is the value for the intercept of a plane miller indice that is parallel with that axis?
infinity
What brackets are for directional miller indices?
[]
What brackets are for planar miller indices?
()
APF General Form:
n/a^3 multiplied by V of a Sphere
, SCC atomic radius (r):
a/2
BCC atomic radius (r):
FCC atomic radius (r):
During heating, CERAMICS undergo:
surface compression & interior tension
During cooling, CERAMICS undergo:
surface tension & interior compression
What combination of k (thermal conductivity) and a (thermal expansion coefficient) is the
most stable?
HIGHER k, LOWER a
Which cubic is the only one that exhibits Ductile-to-Brittle Transition Temperature (DBTT)
AND a fatigue limit?
BCC
during cooling the likelihood of a maetrial fracture increases due to what kind of stress
concentration near tip of the scratch?
tensile
FCC Elements:
Al, Cu, Au, Pb, Ni, Pt, Ag
Answers
MP & Fracture toughness of CERAMICS:
HIGH MP, LOW Fracture Toughness
Bonding of POLYMERS
covalent
Tensile strain is the same as:
Longitudinal/Parallel Strain
What can miller indices NOT contain?
non integers (no fractions)
What is the value for the intercept of a plane miller indice that is parallel with that axis?
infinity
What brackets are for directional miller indices?
[]
What brackets are for planar miller indices?
()
APF General Form:
n/a^3 multiplied by V of a Sphere
, SCC atomic radius (r):
a/2
BCC atomic radius (r):
FCC atomic radius (r):
During heating, CERAMICS undergo:
surface compression & interior tension
During cooling, CERAMICS undergo:
surface tension & interior compression
What combination of k (thermal conductivity) and a (thermal expansion coefficient) is the
most stable?
HIGHER k, LOWER a
Which cubic is the only one that exhibits Ductile-to-Brittle Transition Temperature (DBTT)
AND a fatigue limit?
BCC
during cooling the likelihood of a maetrial fracture increases due to what kind of stress
concentration near tip of the scratch?
tensile
FCC Elements:
Al, Cu, Au, Pb, Ni, Pt, Ag
