摘要:
The present invention provides a fiber-reinforced composite material including a first fiber-reinforced sheet in which first prepregs including reinforcing fibers arranged in one direction and a first thermoplastic resin are woven to cross each other, a second fiber-reinforced sheet in which the first prepreg, and a second prepreg including reinforcing fibers arranged in one direction and a second thermoplastic resin are woven to cross each other, and a third fiber-reinforced sheet in which the second prepregs are woven to cross each other, wherein the second fiber-reinforced sheet is disposed between the first fiber-reinforced sheet and the third fiber-reinforced sheet.
摘要:
Methods and apparatus are provided for the production of thermoplastic composite sheets whose fibers are other than perpendicular to the longitudinal axis of the sheet and which are capable of being slit into sheets, strips and/or tapes of custom widths.
摘要:
The present disclosure provides for a reinforced elastomeric blade having a plurality of laminated layers. The laminated layers can include at least two layers of elastomeric material at least partially separated by a fiber reinforced laminate layer or an embedded metal layer.
摘要:
A fiber-reinforced composite material (11) is constructed by laminating a plurality of fiber bundle layers formed of a reinforced fiber to form a laminated fiber bundle layer and further impregnating the laminated fiber bundle layer with a matrix. At either side of a neutral surface (16), the number of +θ layers which are fiber bundle layers having a fiber orientation angle of +θ and the number of −θ layers which are fiber bundle layers having a fiber orientation angle of −θ are the same, the order of laminating the fiber bundle layers is inversely symmetrical with respect to the standard surface, and the number of other fiber bundle layers disposed between the +θ and −θ layers at either side of the standard surface is the same.
摘要:
The invention relates to a molding tool for the production of components composed of fiber composite materials, in which the molding tool has a fiber composite structure and an electrical resistance heating element, whereby carbon fibers or carbon filaments are embedded into the fiber composite structure of the molding tool in a plastic matrix, close to the shaping surface of the molding tool. Such a molding tool is further developed in that the carbon fibers or carbon filaments in the plastic matrix, close to the shaping surface, essentially determine the mechanical strength of the molding tool, and that the electrical resistance heating element is interconnected in such a manner that at least individual sections of the electrical resistance heating element form an electrical parallel circuit with one another.
摘要:
Disclosed are methods and devices for the formation of fabric preforms that may be subsequently impregnated with a resin to form a composite component. One end of the fabric is received on the form such that the axial tows of the fabric extend in a direction generally perpendicular to a central axis of the form. At least some of the plurality of axial tows are separately tensioned on an end of the fabric not attached to the form and the fabric is wrapped around the form by rotating the fabric and form relative to one another about the central axis.
摘要:
A method of manufacturing a multi-axial laminate of webs produced from cables stretch broken into strips includes arranging, at an entry of a conveyor table, a first layer of pre-wound pre-cut strips along the longitudinal axis of the table, the strips being partially superimposed; arranging along the table at least two cross lappers transferring and depositing in an oblique and/or divergent position at predetermined angles a stretch broken strip; and arranging the strips in successive superimpositions on the first layer of pre-cut strips in different planes, to form a multi-axial web of stretch broken strips. The web then being treated by a fixing device. Movement of the support belt of the table taking place in steps to ensure the superimposition of the different layers of pre-broken strips deposited by the cross lappers. Implementation of the method taking place without any prior cohesion treatment of each strip.
摘要:
An apparatus for fabricating a nonwoven fabric having the appearance of a woven fabric includes a supply station for parallel warp yarns, a support structure for orienting the parallel warp yarns into a cylindrical orientation, a weft yarn applicator for wrapping weft yarns around the cylindrically oriented warp yarns after an adhesive scrim has been overlaid onto the warp yarns, a heating station for activating the adhesive and a cooling station for setting the adhesive, and a cutter for severing the cylindrically formed fabric laminate so that it can be flattened and wrapped onto a take-up roller. A warp yarn alignment station includes two sets of rollers spaced apart to allow the warp yarns to pass between the two sets of rollers, wherein the of rollers are over-driven to provide a roller surface speed greater than a predetermined speed of the warp yarns.
摘要:
A reinforced fabric that includes a first fiber group and a thread. The first fiber group includes a plurality of fiber sets positioned substantially parallel to one another. Each of the fiber sets includes a plurality of fibers. The thread is formed of at least one strand of material. The thread has an outer surface that is formed of a material having a melting point that is less than the melting point of the fibers in the fiber sets. The thread is stitched about the fiber sets to at least partially maintain a position of the fiber sets relative to one another. The thread forms a plurality of heat created permanent closed loop structures in the reinforced fabric. At least one of the loop structures encircles at least one fiber set. At least one of the fibers in the fibers sets is not strongly bonded to the thread that encircles the fiber set.
摘要:
A reinforced fabric that includes a first fiber group and a thread. The first fiber group includes a plurality of fiber sets positioned substantially parallel to one another. Each of the fiber sets includes a plurality of fibers. The thread is formed of at least one strand of material. The thread has an outer surface that is formed of a material having a melting point that is less than the melting point of the fibers in the fiber sets. The thread is stitched about the fiber sets to at least partially maintain a position of the fiber sets relative to one another. The thread forms a plurality of heat created permanent closed loop structures in the reinforced fabric. At least one of the loop structures encircles at least one fiber set. At least one of the fibers in the fibers sets is not strongly bonded to the thread that encircles the fiber set.