What is tensile strength and what are its types?

Tensile strength, ability of polymers It is against the maximum amount of tensile stress that they can withstand during stretching and do not fail in it. This point is when the material changes from elastic deformation to plastic deformation.

In this article, we will talk about tensile strength of polymers and tensile testing of polymers and plastics. Then we will explain the tensile test parameters such as stress, strain, yield strength and failure. We will discuss the factors affecting the tensile strength of polymers, as well as the standard of tensile tests and how to calculate the tensile strength.

The tensile strength test of polymers is one of the most important and widely used tests of the mechanical properties of tires and plays an important role in the selection of materials for the production of various polymer products.

Elastic Deformation: When we remove the stress applied to the plastic in the tensile test, the material returns to its original dimensions and state. In fact, the deformation applied is temporary and disappears when the stress is removed.

Deformation of plastic: In this type of deformation, by removing the applied stress, the dimensions of the material return to their original state, and the deformation and state created is irreversible.

Types of tensile strength:

In general, the tensile strength of polymers and plastics is classified into three types, as shown in the figure below:

• Tensile strength at yield strength: It is the stress that the polymer can withstand without permanent deformation and it can be measured in the tensile test performed in the tensile device (universal tension).
• Tensile strength at breaking point breaking or fail: Strength at the point at which the polymer fails.
• ultimate strength: It is the maximum stress that the polymer or material can withstand.

All of these tensile test parameters can be calculated and measured in the tensile strength test strain diagram in the Tensile (Universal Tensile) device.