Elastic
A material that returns to its original shape after a deforming force is removed
Plastic
A material that is permanently deformed after an applied force is removed
Strong
Require strong force to break
Weak
Requires little force to break
Stiff
Require high force to deform
Compliant
require little force to deform
Brittle
breaks before plasticly deforming
Tough
Plasticly deforms before breaking
Ductile
can be deformed under tension
Malleable
can be deformed under compression
Hooke’s law
the force needed to stretch or compress a material and extension are directly proportional
Elastic limit
The greatest stretch/compression where the spring will return to its original shape once the force is removed
Limit of proportionality
The last point on a force-extension graph where the line is straight
What is Young modulus of a material
tensile stress/Strain
Area under a stress-strain graph
Energy stored per unit volume
Ultimate tensile stress
The maximum stress (per unit area) that a material can withstand before it breaks
Tensile stress
Force per unit cross-sectional area that is tending to stretch an objectT
Tensile strain
The extension per unit length
