Seven boron/epoxy double-wall shafts were ballistically impacted while under torque loads ranging from 7,500 to 12,300 i.-lb. Projectile velocities ranged from 1,540 to 2,500 fps. Static residual strength tests were then conducted. Three aluminum shafts were tested similarly for comparison. The residual strength of the boron/epoxy shafts was approximately 8,000 in.-lb, which is about one-third the ultimate strength of an undamaged tube. The aluminum shafts exhibited residual strengths of 22,000 to 32,000 in.-lb, which would be sufficient to carry expected flight loads. (Author)


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    Title :

    Ballistic Vulnerability of Boron/Epoxy Double-Wall Drive Shafts


    Contributors:
    R. T. Welge (author) / F. H. Veit (author)

    Publication date :

    1971


    Size :

    45 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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