What is the impact of excessive moisture during the drying process on repairs?

Excessive moisture during the drying process can significantly affect the integrity of repairs, particularly in composite materials. When moisture is trapped in the repair area, it can interfere with adhesive bonding and the curing process of resins. This can lead to various issues, with delamination being one of the most critical.

Delamination occurs when layers of material start to separate due to inadequate adhesive bonding or the presence of moisture. Moisture can weaken the adhesive properties, preventing proper curing and reducing the overall strength of the repair. In composite structures, this can be especially detrimental because the bond between layers is essential for maintaining structural integrity and performance.

In essence, managing moisture levels is crucial to ensure that repairs are effective and durable, as excessive moisture compromises the adhesion and can lead to delamination, ultimately affecting the aircraft's performance and safety.