A method and apparatus for performing induction welding. A number of protective layers are positioned between a susceptor layer and at least one of a plurality of workpieces at a weld location. An undesired current path is prevented from forming at the weld location during induction heating of the plurality of workpieces by the number of protective layers.

A method and apparatus is presented. A layer of composite material is laid up on a forming tool. A bend is formed in the layer on the forming tool to form a bent layer. A laminate stack and the bent layer are assembled to form the composite filler.

A joint molding apparatus for molding joints between composite panels comprising inflatable molding bladders connectable to a source of pressurized fluid. A bladder support structure supports the bladders in respective positions adjacent an intersection of panels where, when inflated, the bladders support a joint formed at the intersection of panels while an uncured portion of the joint is curing to hold the joint in a desired configuration at the panel intersection.

The invention relates to a planar structure for joining, in particular for the material-uniting joining, of at least two components. According to the invention, the planar structure is flexible and formed by at least one reaction strand. The reaction strand comprises a preferably cylindrical core, which is provided, at least in some areas, with a coating, which is constructed with a plurality of coaxially applied layers with a small thickness. To produce the layers, two different materials are used, the layers being constructed alternately with one of the two materials. Because of the high degree of flexibility of the reactive planar structure and its arbitrary area extent, components with a complex geometry in the region of the joint faces as well as large-format components can be joined in a material-uniting manner without problems. The reactive planar structure can be produced here using the methods known from textile engineering with virtually any dimensions and, in addition, by a continuous industrial production process. Moreover, the invention relates to a method for providing a material-uniting connection between two components, in particular by means of the planar structure according to the invention.

The pipe includes at least one tubular sheath delimiting a passage for circulation of the abrasive material, at least one tensile armor layer externally positioned with respect to the tubular sheath, the armor layer including a plurality of filiform armor elements. It further includes a protective internal layer positioned inside the tubular sheath in the circulation passage, the protective internal layer including an elastomeric matrix and a longitudinal reinforcement assembly embedded in the matrix.

A pre-buried casing tube uses glass fiber reinforced resin as the raw material to enhance the operation strength of the pre-buried casing tube, extend the service life of the pre-buried casing tube, and reduce maintenance cost of the railway transport system. The pre-buried casing tube includes at least one casing tube body, each casing tube body including at least one retaining element, the retaining elements provided in intervals along one side of the casing tube, each casing tube body disposed adjacently so as to form a passage for a screw, each retaining element provided in the passage for the screw.

Described herein are thermoplastic composites and methods of making thereof. The thermoplastic composites disclosed herein can include at least one randomly-oriented carbon fiber layer in the laminate to improve induction heating efficiency of the thermoplastic composite.

A method for producing a component with a surface that is suitable for plastic welding or adhesive bonding of two parts is provided. As a preparation step prior to joining, a filler sheet comprising a thermoplastic material or adhesive is arranged on a first surface of a first component and a structuring tool is arranged on the filler sheet. Mechanical force is applied to the structuring tool and heat is applied to the filler sheet such that the filler sheet is attached to the first surface of the first component and such that the structuring tool is partially embedded in the filler sheet. The structuring tool is subsequently removed from the filler sheet to produce a plurality of protrusions in the outer surface of the filler sheet. After surface structuring the first and second components are joined using any type of welding technique or joined using of adhesive bonding.

A connection between two components and a method for connecting two components. The two components have plug-together portions with profiles which can be plugged into one another, the plug-together portions of the two components being plugged into one another in an overlapping region, and a winding region of the two components which at least partially coincides with the overlapping region being wound around by a winding of fiber-reinforced plastic.

A method and apparatus is presented. A layer of composite material is laid up on a forming tool. A bend is formed in the layer on the forming tool to form a bent layer. A laminate stack and the bent layer are assembled to form the composite filler.