Material Tolerance Final

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