Mechanical Properties-A Scientific approach

Broadly there are two aspects of what is meant by mechanical properties namely strength and ductility.
These properties are measured by various mechanical
tests and rather arbitrary values are obtained from
these tests. The present conception of true stress and true strain in simple tension test suggests the existence of mechanical equation of state. The article reviews how
some of the common properties could be derived from this simple test and how with the progress of our understanding of reactions offorces within metals, a unifying conception of mechanical properties may he developed. It is advocated that in the present state of development many common mechanical properties may be replaced by other values derived from the true stressstrain curve.