3902715
Descrição
Quiz por Brittany Rhodes4395, atualizado more than 1 year ago
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Criado por Brittany Rhodes4395
aproximadamente 9 anos atrás
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Questão 1
Questão
Choose all primary material selection issues
Responda
-
shape
-
cost
-
density
-
material properties
-
function
-
other
-
external factors
-
hardness
-
process (fabrication)
-
device variables
Questão 2
Questão
formula for density
Responda
-
stress/strain
-
mass/volume
-
delta L/L
Questão 3
Questão
The yield strength is where material starts to plastically deform
Responda
- True
- False
Questão 4
Questão
Formula for modulus of elasticity
Responda
-
mass/volume
-
stress/strain
-
delta L/L
Questão 5
Questão
Definition of modulus of elasticity
Responda
-
where material property begins to plastically deform
-
maximum stress a material can withstand
-
slope of the elastic region of the stress/strain curve
-
where the material fractures
Questão 6
Questão
Stress depends on the type of material being tested
Responda
- True
- False
Questão 7
Questão
Definition of Ultimate Tensile Strength (UTS)
Responda
-
Slope of the elastic region of a stress strain curve
-
maximum stress a material can withstand
-
stress where a material fails
-
where material starts to plastically deform
Questão 8
Questão
Resistance to plastic deformation or scratching or bending is...
Responda
-
hardness
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fatigue endurance limit
-
yield strength
-
fracture toughness
Questão 9
Questão
the hardness of metals is tested with which test
Responda
-
brinell or rockewell
-
durometer score
Questão 10
Questão
the harness of polymers is tested with
Responda
-
brinell or rockewell
-
durometer score
Questão 11
Questão
Fatigue endurance limit does not apply to non-ferrous metals
Responda
- True
- False
Questão 12
Questão
For a material to be tough it needs to be what two things
Responda
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ductile
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durable
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strength
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stiff
Questão 13
Questão
which material has the highest modulus and density
Responda
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steel
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titanium
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aluminum
Questão 14
Questão
Aluminum has a modulus and density that is [blank_start]1/3[blank_end] the value of steel (ratio)
Responda
-
1/3
Questão 15
Questão
the equation for stress (in variable form) is [blank_start]F/A[blank_end]
Responda
-
F/A
Questão 16
Questão
Pure shear stress is generally 1/2 of what?
Responda
-
normal stress
-
torsional shear stress
-
tensile strength
-
flexural stress
Questão 17
Questão
Equation for flexural normal stress
Responda
-
Mc/I
-
F/A
-
delta L/L
-
bd^3/12
Questão 18
Questão
In the equation Mc/I, what does the c stand for?
Responda
-
moment of inertia
-
distance from the neutral axis to the extreme fiber
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shear stress
-
polar moment of inertia
Questão 19
Questão
Deflection is dependent on material type
Responda
- True
- False
Questão 20
Questão
What is the equation for deflection?
Responda
-
FL/AI
-
FL/AE
-
delta L/L
-
I/c
Questão 21
Questão
What is the equation for Factor of safety
Responda
-
stress allowable/stress actual
-
stress actual/stress allowable
Questão 22
Questão
In the factor of safety equation, which stress value is higher?
Responda
-
stress allowable
-
stress actual
Questão 23
Questão
What material can not be heat treated, only cold worked?
Responda
-
400 SS
-
Aluminum
-
Steel
-
300 SS
-
Titanium
Questão 24
Questão
Cyclic loading can cause a material to fail at stress values higher than the yield stress
Responda
- True
- False
Questão 25
Questão
What material does not have an endurance limit
Responda
-
steel
-
aluminum
Questão 26
Questão
A material is not likely to fail between the [blank_start]endurance limit[blank_end] line and the yield stress line
Responda
-
endurance limit
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