Question

The tensile load-elongation curve of a metal does not describe

• A. Yield stress
• B. Necking strain
• C. Anisotropy index
• D. Work hardening

Hint:

Tensile tests reveal mechanical properties such as strength, ductility, and toughness — but not directional properties like anisotropy which require specific directional testing setups.

Answer 1

The Correct Option is C

The tensile load-elongation curve of a metal typically provides information on several mechanical properties such as: - Yield stress (the stress at which permanent deformation begins), - Ultimate tensile strength, - Necking strain (where the specimen begins to narrow), - and Work hardening (the increase in stress with plastic deformation). However, anisotropy index refers to the directional dependence of a material’s properties (like different behavior along different axes), and this property cannot be directly interpreted or extracted from a standard tensile load-elongation curve.