Abstract:
A chuck device of a fiber bundle includes a pair of hands adapted to be opened/closed. The pair of hands includes a plurality of guides adapted to regulate and bend the fiber bundle under a closing state, and to release the fiber bundle under an opening state. Under the closing state, the plurality of guides holds the fiber bundle by being close to each other with tension applied on the fiber bundle.
Abstract:
A winding machine for winding a fiber texture onto an impregnation mandrel, includes: a take-up mandrel for storing and unwinding a fiber texture, the take-up mandrel having a substantially horizontal axis of rotation; an impregnation mandrel for receiving superposed layers of the fiber texture unwound from the take-up mandrel, the impregnation mandrel having an axis of rotation that is substantially horizontal and parallel to the axis of rotation of the take-up mandrel; a camera directed towards the fiber texture and the impregnation mandrel to examine the passage of warp tracer yarns and weft tracer yarns present in the fiber texture; an image-analysis module for determining the positions of the intersections of warp tracer yarns with the successive weft tracer yarns and comparing these determined positions with corresponding positions for the intersections of reference warp and weft tracer yarns, and determining an offset value for the fiber texture for each of these intersections; electric motors for driving the mandrels in rotation about their respective axes of rotation; and a control unit for controlling the electric motors for driving rotation of the mandrels.
Abstract:
Disclosed herein is a method for manufacturing a wound dressing. The method includes the steps of: forming a alginate fiber by a wet spinning process; winding the alginate fiber around a board to form a plurality of first fibers on a surface of the board; spraying an aqueous solution containing sodium ions on the surface of the wound first fiber; rewinding the alginate fiber around the board to form a plurality of second fibers stacked on the first fibers, in which the second fibers are not parallel with the first fibers; and drying the first fibers and the second fibers.
Abstract:
A winding machine for winding a fiber texture on an impregnation mandrel, the winding machine including: a takeup mandrel for storing a fiber texture, the takeup mandrel having an axis of rotation; an impregnation mandrel for having superposed layers of the fiber texture stored on the takeup mandrel wound thereon, the impregnation mandrel having an axis of rotation that is substantially parallel to the axis of rotation of the takeup mandrel; at least one electric motor for driving the mandrels in rotation about their respective axes of rotation; and a control unit for controlling the at least one electric motor for driving the mandrels in rotation.
Abstract:
A supporting strut for supporting an intermediate deck (2) that is arranged in an aircraft fuselage (1), includes a hollow cylindrical rod body (3) that includes a fiber reinforced material, with the two ends of the rod body (3) being designed as attachment sections for detachable attachment to the aircraft fuselage (1) or to the intermediate deck (2), wherein the rod body (3) includes at least one first reinforcement layer (10a) made from a carbon fiber fabric with an identical number of warp- and weft threads in 45° alignment or 90° alignment, as well as at least one second reinforcement layer (10b, 10c) made from a carbon fiber fabric including a higher number of warp threads than weft threads in 0° alignment, as well as a final layer including glass fiber, which together with artificial resin form a compact fiber reinforced material.
Abstract:
Spiral winding systems for manufacturing a contoured composite component including a creel for holding a triaxial material having a width and keeping the material straight to provide uniform overlaps during winding; a tensioning device for receiving the width of material from the creel and providing tension to the material during winding; a contoured curing mandrel for receiving the material from the tensioning device to produce a spirally wound contoured composite component preform; and a traversing screw for spirally winding the material from the tensioning device about the contoured curing mandrel such that each subsequent layer of the material overlaps by about half of the width where the contoured composite component comprises a cylindrical shape and non-crimp or braided material; a conical shape and non-crimp or braided material void of hoop fibers; or a combination thereof.
Abstract:
A supporting strut for supporting an intermediate deck (2) that is arranged in an aircraft fuselage (1), includes a hollow cylindrical rod body (3) that includes a fibre reinforced material, with the two ends of the rod body (3) being designed as attachment sections for detachable attachment to the aircraft fuselage (1) or to the intermediate deck (2), wherein the rod body (3) includes at least one first reinforcement layer (10a) made from a carbon fibre fabric with an identical number of warp- and weft threads in 45° alignment or 90° alignment, as well as at least one second reinforcement layer (10b, 10c) made from a carbon fibre fabric including a higher number of warp threads than weft threads in 0° alignment, as well as a final layer including glass fibre, which together with artificial resin form a compact fibre reinforced material.
Abstract:
Armouring tape (102) for wrapping around a hose (300) during its fabrication by a hose-wrapping machine (200; 400). The tape (102) is coiled into a roll (100) having a hollow core (109) from which the tape (102) is unwound to be wrapped onto the hose (300). Th hose-wrapping machine (200; 400) rotatably mounts the roll (100) with the hose (300) passing through the roll core (109), the roll axis (108) being skewed to the hose axis (304) by the helix angle at which the tape (102) is to be wrapped onto and along the hose (300). The hose (300) is moved longitudinally through the longitudinally static roll (100) and at the same time, the roll (100) is rotated around the longitudinal axis (304) of the non-rotating hose (300). The armouring tape (102) unwinds from the inside (109) of the roll onto and along the hose (300) so as to wrap the hose (300) with a uniform helix of armouring tape (102). The use of a tape (102) containing an elastomer-enbedded array of armouring cables (104) enables armouring wires and elastomer layers to be applied without a stabilising layer of fabric, and greatly simplifies setting-up of machinery for hose fabrication. The use of a tape roll (100) which can be unwound from its inside (109) enables hoses to be wrapped without having to orbit rolls that are very large and heavy.
Abstract:
An apparatus and method for winding a towpreg having a spool winding machine having a rod-shaped body for mounting a core of a spool, wherein the core is shuttled on the rod-shaped body to allow the towpreg to maintain a straight path substantially normal to an axis of the rod-shaped body are disclosed.
Abstract:
An in-situ curing filament winding process for making high quality flywheel rims at low cost, and the rims made by the process, and also an apparatus for performing the process, continuously cures resin during the filament winding process. A lower winding process temperature is used along with a lower cure temperature and inherently higher toughness epoxy resin system allows for the rim to be wound continuously, using a conservative radial deposition rate of approximately ¼-½ inch per hour. Multiple types of fibers can be used in a rim where they best serve the strength and stiffness requirements of the structure. The winding temperature can be kept at approximately 55° C.-80° C., providing low thermal residual stresses. Aliphatic amine or ether amine curing agents with epoxy resin generally work well to reduce the winding temperature and allow low viscosity, but other resin systems that provide similar characteristics can be used.