Yield Strength: Definition, Importance, Graphs, and How to Calculate
Yield strength is an important measure of the ability of a material to withstand an applied load without deforming permanently. It is one of the most important properties that engineers consider when designing structures and components. In this article, we will discuss what yield strength is, why it is important, look at some examples of yield strength graphs, and explain how to calculate it.
What is Yield Strength?
Yield strength is the stress at which a material begins to deform plastically. The applied stress can be measured in either tension or compression. When a material is subjected to a stress higher than its yield strength, it will begin to deform permanently. This is why yield strength is so important; it allows engineers to design structures that can withstand certain loads without deforming.
Importance of Yield Strength
Yield strength is an important property for engineers to consider when designing components and structures. For example, if a beam is designed to support a certain load, the engineer must ensure that the beam has a yield strength greater than the expected load. If not, the beam could deform under the load and fail. Additionally, yield strength is often used in the design of bridges, buildings, and other large structures. By understanding the yield strength of materials, engineers can create structures that are safe and reliable.
Yield Strength Graphs
Yield strength is usually represented as a graph. The graph typically shows the stress-strain curve of a material, with the yield point marked by an arrow. The x-axis of the graph represents the strain while the y-axis represents the stress. An example of a yield strength graph is shown below.
The graph above shows the stress-strain curve of a material. The yield point is marked by an arrow and the corresponding values are indicated to the right. The yield strength of the material is the stress value at the yield point, which is 120MPa in this case.
How to Calculate Yield Strength
Yield strength can be calculated using a variety of methods. The most commonly used method is the offset method, which involves plotting two curves on a graph and measuring the difference between them. The first curve represents the stress-strain curve of the material, while the second curve is an offset curve. The offset curve is shifted by a predetermined amount in the strain direction and the point where these two curves intersect is the yield point. The yield strength is then calculated by measuring the stress at the yield point.
Conclusion
Yield strength is an important measure of the ability of a material to withstand an applied load without deforming permanently. It is important for engineers to consider when designing components and structures, as it allows them to create safe and reliable structures. Yield strength is usually represented as a graph, with the yield point marked by an arrow. Finally, yield strength can be calculated using the offset method, which involves plotting two curves on a graph and measuring the difference between them.
Solution of continuous casting and continuous forging of high strength deformed aluminum alloy blank