Yield Point and Yield Strength
Yield point and yield strength are important characteristics of materials used in the engineering field. The yield point is the point at which plastic deformation begins in a material and the yield strength is the load at which it occurs. It is important to understand how these concepts affect the design of objects since they can be used to calculate expected behavior under certain conditions.
Yield point and yield strength are measured using different units depending on the application, but the most common units are the pounds-per-square-inch or the megapascals. The yield point is usually expressed as the yield stress which is a measure of the amount of force needed to initiate the plastic deformation of the material. The yield strength is the point at which the plastic deformation occurs and is usually expressed as a percentage of the original material strength.
Yield point and yield strength are related to the elasticity of a material and the amount of deformation that it can absorb. The elasticity of a material is a measure of its ability to return to its original form after having experienced some deformation and the amount of deformation that it can absorb before reaching its yield point is called its yield strength.
One way to think of yield point and yield strength is to consider a metal beam. When a load is applied to the beam, it will eventually reach a point where it is no longer able to support the load and begins to deform. This point is the yield point and the amount of force required to reach this point is the yield strength. Because this yield point is proportional to the amount of force applied, the higher the force applied, the lower the yield point.
When designing with any material that has a yield point or yield strength, the amount of force anticipated to be applied should be considered to determine the necessary size and strength of the material needed. If a material is not strong enough to carry the expected load, it will deform significantly which could affect the structure and the integrity of the object.
One of the ways to measure the yield strength of a material is through a tensile test. In this test, a sample of the material is connected to a machine or a fixture which will receive a constant load in order to increase its stress. As the stress increases, the strain at which the material begins to yield is recorded and is used as a measure of its yield point and yield strength. It is important to note that the yield strength of the material may decrease over time as the material is exposed to environmental factors such as temperature and humidity.
Yield point and yield strength are important characteristics of materials used in engineering applications and they can be used to determine the required size and strength of materials needed in order to ensure the safety of an object. It is important to experimentally test the material to determine its yield strength in order to accurately determine the design.
