Abstract: Composite pre-forms are molded at high pressure to form composite parts that can be used in place of metal-based high performance parts, such as the outlet guide vanes found in turbofan jet engines. The composite pre-forms include two different fiber orientations that are co-molded in a resin matrix at high pressures to provide composite outlet guide vanes and other high performance parts. Chambers within the composite part are optionally formed during molding of the pre-form at high pressures.

Abstract: A laminated base material includes a lamination and integration of prepreg base materials each of which includes many reinforcing fibers arranged substantially in one direction and a matrix resin adhered to the reinforcing fibers, wherein at least one of the laminated prepreg base materials is formed with a prepreg base material having, throughout its whole surface, many incisions each extending in a direction crossing the reinforcing fibers, substantially all of the reinforcing fibers divided by incisions, and wherein a length L of each of reinforcing fiber segments formed by the incisions is 10 to 100 mm, a thickness H of the prepreg base material is 30 to 300 ?m, and a fiber volume content Vf of the reinforcing fibers is 45 to 65% and arranging directions of the reinforcing fibers between one and another laminated prepreg base materials have at least two directions different each other.

Abstract: A stab and ballistic resistant material and method of preparing the same, comprising a stab-resistant layer and a ballistic resistant layer, wherein the stab-resistant layer comprises at least one layer, wherein each layer is constituted of two structural units, each of which is formed from perpendicularly combined high strength and high module unidirectional fiber prepreg strips, adjacent structural units are rotated 45°, and the stab-resistant layer has membranes adhered to both sides; the ballistic resistant layer comprises at least one layer, wherein each layer is constituted of two structural units, each of which is formed from perpendicularly combined unidirectional fiber prepreg strips, adjacent structural units are rotated 90°, and the ballistic resistant layer has membranes adhered to both sides. The stab and ballistic resistant material of the invention makes stab and ballistic resistant vests lighter, more efficient in protection, and easy to produce.

Abstract: A unidirectionally stretchable substrate which has good shape retaining characteristics and whose weight can be easily reduced is provided. Unidirectionally 1 stretchable substrate has meshed material 2 that has a plurality of elastomeric linear members 3 arranged orthogonal to each other, the linear members having stretchability and thermoplasticity; and non-woven fabric 4 that is formed of a plurality of filaments 5, the filaments being made of a thermoplastic resin. Filaments 5 of non-woven fabric 4 have been drafted in one direction and are linearly arranged only in that direction. Non-woven fabric 4 is bonded to meshed material 2 such that direction y in which filaments 5 of the non-woven fabric 4 are arranged is parallel with one of directions y in which linear members 3 of meshed material 2 extend.

Abstract: Methods for fabricating sublithographic, nanoscale microstructures in two-dimensional square and rectangular arrays utilizing self-assembling block copolymers, and films and devices formed from these methods are provided.

Abstract: A thermal interface material includes a mechanically compliant vertically aligned nanofiber film and a binder material for joining the nanofibers of the film to the surfaces of two substrates. Preferably, the binder material comprises a non-hydrocarbon-based material such as a metallic eutectic with a melting temperature below a nanofiber thermal damage threshold temperature of the film. The film is grown on a substrate which is then bonded to another substrate by the binder material in an adhesion process that may include pressure and heat. Alternatively, the film may be released from the substrate to produce a stand-alone thermal tape which may later be placed between two substrates and bonded.

Abstract: Disclosed herein is a polymeric filtration medium including at least one fibrous mat of randomly oriented fibers of a polymer. The polymer has a molecular weight distribution (Mw/Mn) between about 1.4 and about 6 and a melt flow rate greater than about 1000 g/10 minutes. Also disclosed herein are methods of making and using the polymeric filtration medium. Further disclosed herein is a composite filtration medium incorporating the polymeric filtration medium.

Abstract: A structure comprising a plurality of plies of fibre-reinforced composite material, each ply having a ply orientation defined by a principal stiffness direction of the ply. The structure has a first region and a second region, each region comprising N1 primary plies, N4 cross plies with a ply orientation substantially perpendicular to the primary plies, N2 positive-angled bias plies with a ply orientation at a positive acute angle to the primary plies, and N3 negative-angled bias plies with a ply orientation substantially perpendicular to the positive-angled bias plies. The ply orientation of the primary plies in each region is more closely aligned with a primary axis of the structure than the cross plies or the bias plies. N1=N4 in the first region but not in the second N region, and N2=N3 in the second region but not in the first region. In each of the two regions, one ply set is balanced and the other ply set is un-balanced.

Abstract: Provided is an advanced grid structure manufactured by a lamination step of laminating a first tape prepreg group, a second tape prepreg group, and a third tape prepreg group repeatedly in the stated order on a forming die, in which grooves (2, 3, 4) in a lattice shape are formed in three directions, so as to provide crossing regions (7, 8, 9) in which two tape prepreg groups overlap each other, and a heating forming step of forming a laminate by heating under pressure. In the lamination step, the first tape prepreg group, the second tape prepreg group, and the third tape prepreg group are respectively laminated as one layer in crossing regions (7, 8, 9) so that a tape width is maintained, and laminated in non-crossing regions (2a, 3a, 4a) in a state of being folded as two layers in a width direction thereof.

Abstract: An article including an outer surface that serves as an aerodynamic surface when the article is subjected for an air stream. A resin matrix made of a polymeric composite laminate of at least one ply includes the outer surface. The at least one ply includes a nano structure embedded therein such that nano filaments of the nano structure in the ply essentially have the same angular orientation relative the plane of the outer surface. The outer ply is a ply of a laminate including at least two plies. Each ply includes large fibers having an orientation different from or identical to the orientation of large fibers of an adjacent ply.

Abstract: A prepreg base material includes reinforcing fibers arranged substantially in one direction and a matrix resin between the reinforcing fibers, wherein the prepreg base material has substantially throughout its entire surface incisions, each incision extending in a direction substantially crossing the reinforcing fibers, wherein substantially all of the reinforcing fibers are divided by the incisions, a length (L) of each of reinforcing fiber segments formed by the incisions is in the range of 10 to 100 mm, a thickness H of the prepreg base material is in the range of 30 to 300 ?m, and a fiber volume content by Vf of the reinforcing fibers is in the range of 45 to 65%.

Abstract: A C/C composite material and a method of manufacturing the same are provided that can improve the thermal conductivity in a stacking direction at room temperature while at the same time improving the flexural strength and the interlaminar shear strength. A C/C composite material includes a laminated material having two or more layered materials (1) laminated on one another, each of the layered materials (1) having a felt (10) and carbon fiber unidirectional cloths (11), (12), and contains a matrix component made of a vapor-phase pyrolytic carbon inside the laminated material. The extending direction of the carbon fibers in the carbon fiber unidirectional cloth (11) is arranged to be at a right angle to the extending direction of the carbon fibers in the carbon fiber unidirectional cloth (12), and the carbon fibers of the felt (10) are disposed in the stacking direction of laminated material by needle punching.

Abstract: A composite material comprises: an open grid comprising at least two sets of strands. Each set of strands has openings between adjacent strands. The sets are oriented at a substantial angle to one another. A tack film is laminated to the open grid. The tack film has first and second major surfaces, such that a material of the tack film at its first and second major surfaces includes about 50% or more of resinous non-asphaltic component and about 50% or less of asphaltic component.

Abstract: The invention relates to a process for the manufacture of a multilayer material sheet comprising unidirectional high performance fibers, the process comprising the steps of positioning the fibers in a parallel fashion, consolidation of the fibers to obtain a monolayer, stacking at least two monolayers such that the fiber direction in one monolayer is at an angle a to the direction of the fibers in an adjacent monolayer and fixation whereby the stack of at least two monolayers is subjected to a pressure and temperature treatment for a duration of a least 2 seconds, followed by cooling the stack under pressure to a temperature of 120° C. or lower. The invention furthermore relates to the multilayer material sheet obtainable with the process according to the invention. This multilayer material sheet has a reduced uptake of liquids.

Abstract: A nonwoven-fabric sheet having a high liquid permeation rate and a process for producing the sheet. The nonwoven-fabric sheet comprises two layers, a first layer and a second layer, and is characterized in that the first layer has a plurality of ridges and grooves which extend in parallel in the lengthwise direction, that the first layer comprises heat-fusible fibers and the second layer comprises crimped fibers, and that the sheet has an average fiber angle of 70 or less in a cross-section parallel to the lengthwise direction.

Abstract: Fibrous structures that exhibit a Tensile Ratio of greater than 0.5 as measured according to the Tensile Strength Test Method described herein and a Geometric Mean Flexural Rigidity (GM Flexural Rigidity or GM Flex) of less than 195 mg*cm2/cm as measured according to the Flexural Rigidity Test Method described herein and/or a Geometric Mean Modulus (GM Modulus) of less than 935 g/cm and/or a Machine Direction Modulus (MD Modulus) of less than 845 g/cm, are provided.

Abstract: Fibrous structures that exhibit a Geometric Mean Modulus (GM Modulus) of less than 1070 g/cm as measured according to the Modulus Test Method described herein and a Geometric Mean Elongation (GM Elongation or GM Elong) of less than 15% measured according to the Elongation Test Method described herein are provided.

Abstract: Tire tread provided with a tread surface designed to be in contact with a roadway, this tread comprising a sculpture formed by raised elements delimiting at least two grooves of generally circumferential orientation, this tread comprising a composite material constructed by the stacking of a plurality of layers of rubber, each layer comprising a plurality of short reinforcing fibers that are parallel with one another and oriented in a single direction, the short fibers being crossed from one layer of rubber to the adjacent layer]. Tire provided with such a tread.

Abstract: A die for producing pressed, fiber-reinforced plastic components, as well as a method for producing the plastic component, and the plastic component itself. The plastic components comprising at least two structural parts which overlap one another a pressing direction such that the die comprises at least one upper die portion formed with a pressing unit for applying a pressing force in the pressing direction, and at least one lower die portion which cooperates with the upper die portion to form a cavity in which the plastic component is formed. A die insert is fitted in the die and can move by and with the upper die portion and is designed to transmit the pressing force to the at least one structural part of the plastic component which is overlapped by the other structural part of the plastic component in the pressing direction.

Abstract: Described are protective and/or ballistic resistant articles made from one or more layers of fabric bound to one or more layers of a machine direction oriented film. The described articles exhibit excellent abrasion resistance. The articles include those made using woven and/or non-woven fabrics such as unidirectional fabrics. Methods for producing ballistic-resistant articles using woven and/or non-woven fabrics and machine direction oriented film are also described.

Abstract: The invention relates to a process for the manufacture of a shaped part comprising the steps of—forming a stack by stacking (2) or more sheets comprising mono-layers of unidirectional anti-ballistic fibers and a binder followed by placing the stack in a mould, clamping the stack in the mould with a control member closing the mould—consolidating the stack under temperature and pressure into a curved shaped part. The invention furthermore relates to products obtainable with said process, which are very suitable for use in anti-ballistic applications and include e.g. helmets, curved panels, cones and domes.

Abstract: Layers of unidirectional (UD) fiber prepreg are formed into a pre-plied, multi-directional, continuous fiber laminate that is used as a molding compound to form three dimensional structures. Cut-outs from the laminate are slotted and folded along fold lines to provide near-net-shaped preforms that may be compression molded to form fiber-reinforced composite structures having complex shapes.

Abstract: Multi-layer non-woven fabric material composed of non-woven fiber sheets of aramide/polyethylene fibers, impregnated with resin and/or a filler material, and oriented at various angles, which is used for manufacturing protection garments. The multi-layered non-woven fabric material may also include a foam membrane backing to serve as an anti-trauma mechanism. The invention also describes a method for manufacturing said multi-layer non-woven fabric material and the protection garments thus obtained from a commercially available material, an “in house” equivalent, or the discarded leftover portions of either the commercially available material or the “in house” equivalent material that is not commercially available.

Abstract: A composite member for a vehicle body a method for manufacturing such a composite member, in particular, for a vehicle roof, with a fiber-free outer skin (12) and a fiber-reinforced support layer (16), which is deposited at the inner side of the outer skin in order to support the outer skin. The side of the support layer (16) that faces away from the outer skin (12) is provided with a fiber-reinforced reinforcing layer (18) for reinforcing the support layer. The reinforcing layer has a higher fiber concentration than the support layer.

Abstract: An elastic composite strip has a longitudinally elongated substrate strip having a pair of opposite faces and formed of an elastomer that is highly stretchable longitudinally but only limitedly or not stretchy at all transversely. A respective soft knit fabric cover strip that is highly stretchable longitudinally but only limitedly or not stretchy at all transversely extends longitudinally on each of the faces. Respective arrays of longitudinally spaced and transversely extending lines of adhesive are bonded to the faces and to filaments of the respective cover strips.

Abstract: A composite material comprises: an open grid comprising at least two sets of strands. Each set of strands has openings between adjacent strands. The sets are oriented at a substantial angle to one another. A tack film is laminated to the open grid. The tack film has first and second major surfaces, such that a material of the tack film at its first and second major surfaces includes about 50% or more of resinous non-asphaltic component and about 50% or less of asphaltic component.

Abstract: A treatment for a microelectronic device comprises a dicing tape (110) and a polymer composite film (120) having a pigment or other colorant added thereto and, in some embodiments, a pre-cure glass transition temperature greater than 50° Celsius. The film can comprise multiple layers, with one layer being tacky and the other layer non-tacky at a given temperature.

Abstract: A high-quality multilayer thermoplastic-resin-reinforced sheet material having excellent mechanical properties and drapeability in which a thermoplastic resin excellent in recycling efficiency and shock resistance is used as a matrix. A thermoplastic-resin multilayer reinforced molding formed of the multilayer thermoplastic-resin-reinforced sheet material, in which the high quality and the mechanical properties are maintained.

Abstract: Tapered layers of pre-cured composite material are integrated into a tapered, highly stressed laminate structure in order to provide improved compressive strength. The pre-cured composite material can advantageously be cured under tension as pultruded material, to further augment compressive strength. The thickness of composite layers can be tapered on their termination edges by mechanically abrading, chemical abrading, or other methods. Especially preferred embodiments include aircraft structural components such as wings, wing spars, wing skins, fuselage skins, rotor blades, propellers, and propeller blades. Preferred laminates can be constructed to have at least 6, 10, 30, 50, or 100 layers of material, and can have a maximum thickness of at least 0.15, 0.25, 0.5, 1.0, or 5.0 inches.

Abstract: Provided are materials comprising layers of anisotropically aligned fibers, the alignment of which fibers may be adjusted so as to give rise to circumferentially-aligned fibers that replicate the fiber alignment of native fibrous tissue, such as the meniscus or the annulus fibrosis. Also provided are laminates formed from the disclosed materials, as well as methods of fabricating the disclosed materials and laminates.

Abstract: In the production of reinforcing elements for strengthening the excavation face of a tunnel, a fiberglass profile comprises an axially extending body formed by glass fibers anchored in a polymer resin through a polymerization process. The outer surface of this profile has a corrugated shape with respect to an axial cross-sectional plane of the profile. This corrugated trend is defined by a different degree of compression of the outermost glass fibers of the profile, made by a substantially thread-like element.

Abstract: A graphene/carbon nanotube composite structure includes a carbon nanotube film structure and a graphene film. The carbon nanotube film structure includes a number of carbon nanotubes. The carbon nanotubes form micropores. The graphene film is located on a surface of the carbon nanotube film structure. The graphene film covers the micropores.

Abstract: Layers of unidirectional (UD) fiber prepreg are formed into a pre-plied, multi-directional, continuous fiber laminate that is used as a molding compound to form three dimensional structures. Cut-outs from the laminate are slotted and folded along fold lines to provide near-net-shaped preforms that may be compression molded to form fiber-reinforced composite structures having complex shapes.

Abstract: A composite structure has first and second sections, and a curved corner joining the first and second sections. The structure includes a stack of fibre-reinforced plies. First and second external plies run from the first section into the second section round an inside and an outside of the corner, respectively. First and second internal plies are sandwiched between the first and second external plies, and run from the first section into the second section round the corner. The first internal fly is dropped off inside the second section. The second internal ply is dropped off inside the first section. The structure has an increased thickness where the first and second internal plies overlap.

Abstract: Methodology and tooling arrangements for increasing interlaminar shear strength in a ceramic matrix composite (CMC) structure are provided. The CMC structure may be formed by a plurality of layers of ceramic fibers disposed between a top surface and a bottom surface of the composite structure. A plurality of surface recesses are formed on the surfaces of the structure. For example, each of the surfaces of the composite structure may be urged against corresponding top and bottom surfaces of a tool having a plurality of asperities. The plurality of surface recesses causes an out-of-plane sub-surface fiber displacement along an entire thickness of the structure, and the sub-surface fiber displacement is arranged to increase an interlaminar shear strength of the structure.

Abstract: A ballistic structure having at least one laminate sheet of a plurality of fiber bundles or tapes is disclosed. In embodiments having more than one laminate sheet, the inter-laminate shear strength between the laminate sheets is controlled to control ballistic effectiveness of the ballistic structure.

Abstract: The present invention relates to a stack of fibrous materials including at least two unidirectional carbon fiber layers, each extending in different directions, wherein each one of the unidirectional layers is connected by means of at least one of the surfaces thereof to an adjacent web of thermoplastic fibers, at least one web being inserted between two consecutive unidirectional layers, characterized in that the link between each unidirectional layer and each adjacent web is provided by the web, by weld points which produce an intermittent overall weld, and in that said weld points also guarantee the cohesion of the stack, as well as the method for manufacturing same.

Abstract: A method for use in the manufacturing of a composite article includes wrapping a first fiber sheet around a mandrel that includes a plurality of needles that extends therefrom such that the plurality of needles pass through the first fiber sheet. The first fiber sheet includes a plurality of fibers and a plurality of interstitial areas and all of the plurality of fibers in the first sheet is intact. A second fiber sheet is wrapped around the mandrel such that the plurality of needles passes through the second fiber sheet. The second fiber sheet includes a plurality of fibers and a plurality of interstitial areas and all of the plurality of fibers in the second sheet is intact.

Abstract: Inorganic fiber mounting and insulating sheet materials for use in pollution control devices with at least one edge of the inorganic fiber sheet material having at least one group of two or more fibers fused together. A pollution control device comprising such a sheet material. A process for cutting at least one section from a sheet containing inorganic fiber material, where the sheet material is suitable for use in a pollution control device. The fibrous sheet material is cut so that the cut edge has at least one group of two or more fibers fused together. A laser beam can be used to cut the desired section out of the inorganic fiber sheet material.

Abstract: A subassembly useful in a ballistic armor article comprises a first layer comprising a plurality of first yarns of continuous filaments, said first yarns being substantially parallel in a first direction; a second layer adjacent to and in contact with said first layer and comprising a plurality of second yarns of continuous filaments, said second yarns being substantially parallel in a second direction skew with respect to the first direction wherein the first and second yarns comprise para-aramid yarns having a tenacity of at least 25 grams per dtex and an elongation at break of from 3.6 to 4.5 percent.

Abstract: A ballistic impact resistant composite comprising a glass fiber and a resin, where the glass fiber consists essentially of fiber having a diameter of less than 9 microns, is provided. The ballistic impact resistant article or composite comprising fiber less than 9 micron yields a higher V50 value at the same areal density, or the same V50 value at a lower areal density, than an impact resistant article or composite comprising fiber of greater than 9 micron.

Abstract: An impact resistant layered armor system including a base layer of foamed glass material and an outer layer of relatively tough projectile retentive material. The foamed glass material is substantially isotropic, with a bulk density of between about 0.1 and 0.35 grams per cubic centimeter. The foamed glass material is characterized by a plurality of randomly oriented substantially identically sized cells and is substantially amorphous.

Abstract: Variously configured sub-laminate modules are provided, which comprise at least a first ply and a second ply, the first ply comprising fibers extending in a first orientation, the second ply comprising fibers extending in a second orientation. The second orientation is offset relative to the first orientation, which offset defines an acute angle between the two orientations. The acute angle is less than 90 degrees and in at least one embodiment, the acute angle is approximately 25°. In certain embodiments, the acute angle further defines an unbalanced structure of the sub-laminate module. In certain embodiments, the first and second plies may be further secured relative to one another in a non-crimped configuration. Composite laminated structures formed from various embodiments of the sub-laminate modules are also provided, at least some of which may be homogenized. Various methods of manufacturing the sub-laminate modules and the composite laminated structures are also provided.

Abstract: Disclosed is a metal-based carbon fiber composite material exhibiting an improved thermal expansion coefficient, improved thermal conductivity, and is smaller in weight, and a method for producing the same. The composite material includes a metal and a carbon fiber including a micron carbon fiber and a nanofiber; the composite material having a first surface; the micron-size carbon fiber being oriented in one direction parallel to the first surface and being continuous from end to end; at least 80% of the nanofiber being oriented at an angle within 30° with respect to the first surface; and the nano-size carbon fiber being oriented randomly in a plane parallel to the first surface. In the composite material, a surface region may include a smaller amount of micron carbon fiber than other regions, or include no micron carbon fiber; the nanofiber may have an orientation parallel to the surface of the composite material.

Abstract: A composite article has an article surface and may comprise a plurality of fibers at least partially embedded in a matrix. Each fiber may have at least one base surface and a pair of side surfaces. The side surfaces may be oriented in non-perpendicular relation to the base surface. The fibers may be positioned in side-by-side relation to one another such that the side surfaces of each fiber are oriented substantially parallel to the side surfaces of the immediately adjacent fibers.

Abstract: A composite article may include a plurality of fibers embedded within a matrix. The fibers may include a first fiber and a second fiber which may be oriented in substantially parallel relation to one another. The first and second fibers may be connected to one another at one or more connection sites.

Abstract: An aircraft structure including structural composite parts assembled together to form the aircraft structure. A bonding interlayer material bonds the structural composite parts to each other. The bonding interlayer material includes a nanostructure enhanced material. A method of producing an aircraft structure of assembled structural composite parts, being cured or semi-cured before assembly.

Abstract: A reinforcement layer (2) is based on parallel rovings (2a) of continuous glass strands, and one or two binding layers (3) consisting of portions of fibers having a heat-meltable surface. The assembly is consolidated by penetrating fiber portions (3b) that penetrate into the heat-meltable surface, these penetrating over a part of their length into the reinforcement layer (2) and adhering to the continuous glass strands of the rovings (2a).

Abstract: Method for fabricating a reinforcing coating for a part made of composite material. Pre-impregnated reinforcing fibers are used in the form of slivers and said slivers are laid on the part in two layers of longitudinal slivers by being placed thereon. This fabrication makes provision for using an angular orientation for the slivers of each layer respectively of 0° and of some other angle relative to said determined direction of the solid body for covering using an interlaced pattern type that gives layer crossing lines parallel to a longitudinal axis of the solid body for covering, which pattern type is selected to form interlacing patterns that limit the number of layer crossing lines along the longitudinal axis of the solid body for covering to a single line.

Abstract: Membrane body (1) comprising at least one pair of panels (10, 11) connected together in an adhesive manner and for each pair of said panels (10, 11), at least one flexible sheath (15) arranged stably according to a set pattern to resist membrane stress acting on the panels (10, 11); each sheath (15) housing a respective tie rod (16), connected to the panels (10, 11) in an end position in a set manner in such a way as to be suitable for resisting normal stress to free the panels (10, 11) from the respective membrane stress, thereby maintaining the group of the panels (10, 11) flexible and maintaining the corresponding production method.