The emergency slides in modern transport aircraft must always deploy in an emergency but must never deploy in flight. CRM Engineering Services was tasked with validating the advanced composite structure containing the emergency slide off the wing.
As with most modern aircraft, much of the A380 is built with advanced composite materials which provide a strong, stiff, and lightweight structure.
The analysis of laminated composite structures is quite different from the analysis of metal structures. The same criteria exist; strength, fatigue, and stiffness, but each ply of the laminate must be checked. The fatigue assessment of composite structures is quite different as a laminated sheet can develop cracks in many more ways than an aluminum sheet.