What is yield stress value for frp?

The yield stress of a material is the stress at which it begins to deform plastically. For fiber-reinforced polymers (FRPs), the yield stress can vary depending on the type of fiber, the matrix material, and the manufacturing process.

Here are some typical yield stress values for different types of FRPs:

Carbon fiber-reinforced polymer (CFRP): 150-400 MPa

Glass fiber-reinforced polymer (GFRP): 50-70 MPa

Aramid fiber-reinforced polymer (AFRP): 50-200 MPa

In general, CFRPs have the highest yield strength, followed by AFRPs, and then GFRPs. It is important to note that these values are for unidirectional FRPs, meaning that the fibers are all aligned in the same direction. For woven or multi-directional FRPs, the yield stress may be lower due to the reduced fiber content in any given direction. Additionally, the yield stress of an FRP can be affected by environmental factors such as temperature and humidity.