What are the effects of prolonged contact with wet leaves on composite materials?

Prolonged contact with wet leaves can significantly affect composite materials, leading to various forms of degradation. Moisture absorption is a primary concern, as it can weaken the matrix and fiber interface, reducing the material's structural integrity. Over time, this exposure may cause swelling, delamination, or even chemical changes in the resin matrix. Additionally, organic acids and enzymes from decomposing leaves can accelerate corrosion or surface erosion. To mitigate these effects, proper sealing, regular maintenance, and the use of moisture-resistant coatings are recommended. Understanding these impacts helps in designing more durable composites for outdoor applications.