A material being loaded in a) compression, b) tension, c)
shear.Uniaxial stress is expressed by
where F is the force [N] acting on an area A [m2].
But we cannot compare stress with strength.
the difference between the stress and strength is............
stress= load/ area ( n/mm2) .. it denotes that the load x will act in 1 mm2 of area of a structure,
strength denotes that max. stress upto which the structure get failure.
Strength is an extrinsic property of the material. It is
derived outcome of heat treatment processes. It is a
function of grain size, No of slip planes within a grain
etc. Therefore strength defines capacity of a material to
Stress is an internal resistance/force per unit area in the
material, generated due to application of external force.
Incidently, both have same units as strength is also
measured by force/area.