In composite materials, what role does the reinforcement phase primarily serve?

In composite materials, the reinforcement phase primarily serves to enhance strength and stiffness. The reinforcement, which can be in the form of fibers, particles, or other materials, is embedded within a matrix material. This combination allows the composite to achieve superior mechanical properties compared to the individual components. The reinforcement provides structural support, enabling the composite to withstand applied loads without significant deformation or failure.

The matrix material, on the other hand, acts to bind the reinforcement together and transmit loads between the reinforcement elements. By effectively distributing stress and protecting the reinforcement from environmental damage, the matrix complements the role of the reinforcement. Thus, the primary function of the reinforcement phase is to significantly contribute to the overall strength and stiffness of the composite material, making it ideal for various applications where high performance is required.