If these materials are taken to some strain condition work has to be done against the elastic stress and this is represented by the area under the curve shown in yellow on the diagrams. This area is ...

in a material in the linear elastic region of a stress-strain curve. A high Young's modulus indicates a stiff material that resists deformation, while a low modulus characterizes a soft material that ...

The tensile behavior of composites is also different from that of metals in the 'plastic deformation' region of the stress/strain curve. The diagram shows the curve for a uniaxial sample tested along ...