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