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Units for modulus of elasticity
pounds per square inch (psi)
The formula for calculating strain
deformation/L
Material property which measures a material's ability to absorb energy before failure
Toughness
A part that breaks after many cycles of repeated applications of stress
Fatigue
A part that is stressed beyond the yield point will have _ deformation after stress is removed
Permanent
The cause of failure of the Tacuma Narrows bridge was
b
Metal rod original length 10 in and area of 0.04 in is stretched to 10.2 in by 2400 lb. What is stress?
b
When comparing different support beams (made of the same material) for stiffness, it is best to compare their ...
Height to width ratio
Each material, indicate its material class "quartz"
ceramic
Each material, indicate its material class "steel"
metal
Each material, indicate its material class "Teflon"
polymer
Metallurgy is the study of metals and their behavior
True
Each material, indicate its material class "aluminum"
metal
Aluminum alloy has an FCC structure
True
Each material, indicate its material class "plywood"
composite
Each material, indicate its material class "fiberglass"
composite
Strain is the measure of force per unit cross-sectional area
False
Type of bonding dictates whether material is electrically conductive or not
True
Each material, indicate its material class "diamond"
ceramic
Each material, indicate its material class "zip lock bag"
polymer
What class of material might be useful at temperatures 1100 C
ceramics- ceramic composites
Below are examples of plastic deformation except
broken glass
All are attributes of metals except
ductile
Each material, indicate its material class "paper clip
metal
All are attributes of ceramic except
low melting point
Each material, indicate its material class "PVC"
polymer
Each material, indicate its material class "concrete"
composite
What type of bonding makes up ceramic materials
covalent
The maximum attainable stress for metal is called
ultimate tensile stress
Each material, indicate its material class "paper"
composite