In composite materials, what may insufficient resin lead to?

Insufficient resin in composite materials can lead to weak structural integrity because resin serves as the matrix that binds the reinforcement fibers together. The resin provides not only the adhesive qualities necessary to hold the fibers in place but also contributes to the overall mechanical properties of the composite material. When there is an inadequate amount of resin, the fibers may not be adequately saturated, leading to air voids and uneven distribution within the composite structure. This results in lower tensile strength, reduced impact resistance, and overall compromised performance of the material. Such weakness can become critical in applications where structural integrity is vital, causing potential failures in the composite component during use.

While overheating during curing, color discrepancies, and shorter lifespan can be issues associated with the curing process or material aging, they do not address the immediate impact of insufficient resin on the fundamental strength and stability of the composite.