A composite structural component made of a polymer matrix composite material includes an end connection that includes an end portion at one end of the composite structural component, comprising an internal surface comprising a plurality of ridges and grooves defining a first engagement surface along an axial direction and a metal interface component comprising an outer surface comprising a plurality of ridges and grooves defining a second engagement surface along the axial direction and an inner surface defining a mounting surface for attachment of an end fitting. The metal interface component is engaged with the internal surface of the composite structural component by mating of the first and second engagement surfaces. The structure also includes an outer annular component fitted around the end portion in axial alignment with the mating of the first and second engagement surfaces.

Disclosed is a composite beam structure having: an end piece, an end piece outer periphery surface, and an end piece mating end defining an end piece axial boundary, the end piece includes wedge-shaped inner locking features that are formed to project outwardly from the end piece outer periphery surface at the end piece mating end and are spaced apart from one another in the hoop direction; and a composite tube configured to surround at least a portion of the end piece mating end to form a beam joint, wedge-shaped imprints are formed through the composite tube, corresponding to the wedge-shaped inner locking features, the wedge-shaped imprints define respective composite tube wedge-shaped depression surfaces about a composite tube inner periphery and composite tube wedge-shaped boss surfaces about a composite tube outer periphery, and the wedge-shaped inner locking features of the end piece are covered by the composite tube wedge-shaped depression surfaces.

A collar for having in cross-section a generally triangular filler section and a generally rectangular outer section over the filler section. The collar may be part of a tube assembly where the collar serves to couple a fitting to tube. A method of installing the collar includes pressing the collar over the outer surface of the tubing until the strain on the collar in the hoop direction is at a predetermined level.

Proposed is a hydraulic cylinder rod in which a rod eye is robustly coupled to a hybrid round rod for weight reduction. To this end, the hydraulic cylinder rod is configured with a hybrid round rod including a metal tube and a composite material round rod provided for weight reduction inside the metal tube, wherein a side of the metal tube is formed to be relatively longer than the length of the composite material round rod to thereby provide a space defined by a length difference therebetween; and a rod eye is coupled to the space.

A method of forming a tube assembly includes forming arms on a tube end portion by forming a plurality of slots or slits on such tube end and mating such arms with a tapered outer surface of a fitting. The fitting may include at least one annular step mated with an annular step formed on the tube inner surface.

A link includes an outer composite portion substantially encircling at least two bearing pockets and a central substantially incompressible portion disposed between the at least two bearing pockets.

A tie rod that includes a central section, a first tapered section, and a second tapered section. A thermoplastic tube extends the length of the tie rod. The first tapered section includes a first insert positioned within the thermoplastic tube. The second tapered section includes a second insert positioned within the thermoplastic tube. A channel extends through the tie rod along the central section, the first tapered section, and the second tapered section.

A method for producing a component by a 3D winding method, a filament or a plurality of parallel filaments having a fiber-reinforced plastic composite material is or are laid down on a core in a combination of a plurality of different winding patterns. Every filament is preimpregnated. Every winding pattern influences at least one mechanical characteristic of the component. The mechanical characteristics of the component are selectively adjusted by the sequence, repetition, mixing, and material selection of the individual winding patterns.

A composite tube joint may comprise an end of a composite tube, an inner member disposed within the end, wherein an outer surface of the inner member has a complementary shape to an inner surface of the end, an outer member concentrically surrounding the end of the composite tube, and an undulated surface configured to mitigate movement of the end of the composite tube relative to at least one of the inner member and the outer member.

Disclosed are methods and related compositions for producing a positive-locking load application for rod-shaped fiber composite structures, and the design thereof.

The present invention concerns a method for producing a positive-locking load application for tension-compression rods from a fiber plastic hollow structure by means of an outer sleeve. In this process, a force pushes the fiber plastic hollow structure at least partially over at least one force application element, which is provided with at least one undercut to create a positive-locking connection. An object of the present invention is attained through local heating of the fiber plastic hollow structure to the point of plasticity of the fiber plastic hollow structure, at least in the region of the undercut(s) of the force application element, and application of at least one outer sleeve to the fiber plastic hollow structure in the region of the force application element.