The process of evaluating a new material for use in a civil transport aircraft is rather complex and long. The introduction of Al-Li appears as being a particular difficult item. Initially developed for application in combat aircraft aiming for high strength properties, a civil transport airplane however requires Al-Li in a damage tolerant version. Equivalence to existing alloys is requested (equal or better) but Al-Li demands a compromise between major properties as strength, damage tolerance and corrosion resistance. Progress in achieving acceptable and harmonized material quality is very slow and time constraints have prevented introduction in a planned way in a number of programs. The question is raised whether a cost effective use of Al-Li can be envisaged over the next years.


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    Title :

    Point of View of a Civil Aircraft Manufacturer on Al-Li Alloy


    Contributors:
    J. Koshorst (author)

    Publication date :

    1989


    Size :

    5 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English