Stress Strain Plot
Observables
- Elastic region
- Yield point
- Proof stress
- Plastic portion
- Steadily decreasing slope
- Ultimate tensile strength
- Localization of the deformation
- Young’s modulus
- Upper and lower yield stresses
- Fractural strength
Stiff
Area under the curve, until the yield point. Higher area means the higher stiffness.
Strong/strength
- For ductile materials: yield stress
- For brittle materials: fracture stress
Flexible
Higher strain in elastic region.
Weak
Opposite to strengthness.
Greatest percentage elongation
Maximum strain or failure strain.