Accession Number : ADD016136

Title :   Multi-Layered Translated Rib-Stiffened Composite Hollow Cylinder Assembly.

Descriptive Note : Patent, Filed 19 Feb 92, patented 16 Nov 93,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Crane, Roger M ; Bergen, D M

Report Date : 16 Nov 1993

Pagination or Media Count : 14

Abstract : A multiple-layered, translatedly rib-stiffened, composite hollow cylinder and method for fabrication thereof utilizing filament winding techniques known in the art. An inner skin is wound-over a mandrel; then, circumferential ribs are wound over the inner skin, pin rings are placed at the axial ends of the mandrel, longitudinal stringers are engaged with the pin rings and wound over the circumferential ribs, circumferential bands are wound near the axial ends over the longitudinal stringers, and another skin is wound over the circumferential bands and longitudinal stringers; these steps, commencing with the winding of circumferential ribs and concluding with the winding of an additional skin, are repeated as many times as desired, each repetition forming an additional layer, with the circumferential ribs for each additional layer being longitudinally staggered in relation to the circumferential ribs for the previous layer. The cylinder in accordance with this invention is a superior enclosure in terms of mechanical vibrational energy dissipation, directionally controllable thermal energy transmission, and structural damage tolerance; moreover, it advantageously permits a continuous fabrication procedure.

Descriptors :   *RIBS, *PATENTS, *STIFFENED CYLINDERS, *FIBERS, *COMPOSITE MATERIALS, DAMAGE, DISSIPATION, ENERGY, FABRICATION, FILAMENTS, LAYERS, MANDRELS, PINS, RINGS, TOLERANCE, WINDING, ASSEMBLY, SKIN(STRUCTURAL)

Subject Categories : Structural Engineering and Building Technology
      Mechanics
      Laminates and Composite Materials
      Textiles

Distribution Statement : APPROVED FOR PUBLIC RELEASE