Stress-Strain Curve FAQs

What is a stress-strain graph?

A stress-strain curve is a graph between stress and strain for any material, which give us insight into its strength, elasticity, and ductility.

What is stress?

Stress is defined as force per unit area that a material experiences when it is subjected to any external force. It’s unit is newtons per square meter (N/M²) in SI system and pounds per square inch (psi) in the CGS system.

What is a Stress-Strain Curve?

A stress-strain curve is a graph that illustrates the relationship between stress and strain in a material. It is used to characterize the mechanical properties of a material, such as its strength, elasticity, and ductility.

What is strain?

Strain is the deformation that a material undergoes when stress is applied. It is expressed as the ratio of change in dimension to the original dimension.

What is elastic deformation?

Elastic deformation is a temporary deformation that a material undergoes when it is subjected to stress, but material returns to its original shape and size when the stress is released. In Stress-Strain curve this deformation is shown by the linear region.

What is plastic deformation?

Plastic deformation is a permanent deformation that a material undergoes when it is subjected to a load or force beyond its elastic limit. This behavior is characterized by a nonlinear region on a stress-strain curve.

What is yield strength?

Yield strength is the point on a stress-strain curve where a material begins to undergo plastic deformation. It is often used as a measure of a material’s strength and is typically reported in units of force per unit area.

What is ultimate tensile strength?

Ultimate tensile strength is the maximum stress that a material can withstand before it fails or breaks. It is typically reported in units of force per unit area and is often used as a measure of a material’s strength.

Stress-Strain Curve is a very crucial concept in the study of material science and engineering. It describes the relationship between stress and the strain applied on an object. We know that stress is the applied force on the material, and strain, is the resulting change (deformation or elongation) in the shape of the object. For example, when force (stress) is applied to the spring, its length changes under that stress. But as stress is removed, spring came to its initial position.

Stress-Strain curve provides insights into the different materials under different levels of stress. This can help engineers design more efficient and strong structures. In this article, we will learn about, stress, strain, and the relationship between them and others in detail.