Aluminum 6013

Applications: Fuselage

Home | Works Cited | Testing our Samples | Processes | Applications: Fuselage

Aluminum 6013 is relatively new to the aluminum alloy community. Its properties, mainly the resistance to stress corrosion cracking and ability to be precipitation hardened, have directed its use in industry. Aluminum 6013 is currently used in the aircraft and aerospace industries for a wide range of parts. As previously mentioned, the aluminum parts differ in shape, size, complexity and purpose within each industry.

We have decided to concentrate on the Aircraft industry, specifically the airplane fuselage. The fuselage is the main body of the airplane. The fuselage serves several very important roles. It carries the passengers and cargo. It also serves as the reference or stabilizing point for all of the parts that move or create lift for the aircraft. Therefore, the integrity and dependability of the fuselage is crucial for the functionality of an airplane.

The fuselage is composed of two main parts. These two parts are the main skeleton or frame and the outer body wall. Al 6013 is a very strong yet flexible material. However, its strength is less than the aluminum 2000 and 7000 series which are known for their superior strength. Therefore, 6013 is unlikely to replace these alloys’ use in structural and framework components. Thus, we have decided to focus on the fuselage panels. Here the main benefit of Aluminum 6013 will be utilized. Its ability to resist corrosion and stress corrosion cracking while still being extremely lightweight, compared to steel and other common material, and strong is a perfect use for a component that is both important for durability and longevity as well as structure and safety. These panels can be made using sand or continuous casting or sheet forming. The panels can then be reworked to a cylindrical shape and then heat treated to relieve residual stress and harden the material. These panels will then be joined to the main frame of the aircraft using rivets.

fuselageframe.jpg

fuselagebody.jpg

Improvements can be made to the current applications of Al 6013. For the fuselage application considered, the joining or assembly processes used in industry need to be improved to keep up with technology and demand. For example a company called EADS is currently researching ways to join fuselage panels together in a more efficient way while still providing the necessary bond strength and flexibility.

The extrusion method would be the best option as there welds and other joining methods are of course weaker than a single solid piece. Extrusion, if not used to make a more solid and continuous body, could be used to make lap, crimp or snap in joints that can be used to serve as both quick assembly templates as well as preliminary supports for a follow up welding or brazing process. If these improvements are made real, huge savings concerning labor time, factory operating time and material costs can be in line for the already suffering airline industries. Furthermore, a safer and more structured airplane can correspond to consumer confidence in flying and the airline industry.

eads.jpg
EADS fuselage research