A method and system for increasing dampening capacity utilizing dry friction between individual wires of a rope embedded in a molded component formed from a composite. The individual wires allow inter-wire friction to occur during part vibration. The amount of inter-wire friction is controlled by the pressure when the component is molded. The component includes a body that is a molded matrix formed form a composite material. The body may be of any material selected from the group consisting of a polymer, a metal or a ceramic material. One or more vibration-dampening ropes are embedded in the body. The vibration-dampening ropes may be elongated segments or may be a rope having connected ends that form one or more rings. The vibration-dampening rope includes at least outer wires and can further include a plurality of inner wires surrounded by the outer wires. Composite material is prevented from passing through the outer wires, thereby forming voids between the wires.

A composite spring made of a wire of a longitudinal axis curved around a spring axis in a winding direction and a method of fabrication thereof, the spring, the wire comprising a core; and fibers layers wound around the core, and an angular positioning, relative to the spring axis, of each one of the fiber layers being selected, along a length of the core, depending on the winding direction of the wire about the spring axis, to adjust at least one of: high natural frequency of the spring, resistance to buckling and resistance to tensile and compressive stress components induced by a compressive load on the spring.

A support structure for a non-pneumatic tire and a tire incorporating such support structure. A continuous membrane extends between a radially-inner leg and a radially-outer leg. Joints and reinforcement may be provided on sides of the membrane. An annular band may be connected with the radially-outer leg. A wheel, hub, or other structure may be connected with the radially-inner leg.

A support structure for a non-pneumatic tire and a tire incorporating such support structure. A support membrane extends continuously between a radially-inner end and a radially-outer end. Joints may be positioned at each end. An annular band may be connected with the radially-outer end. A wheel, hub, or other structure may be connected with the radially-inner end.

A method of making a carbon fiber wave spring includes forming a disc-shaped ring from prepreg carbon fibers. The disc-shaped ring is then formed into a desired wave shape. The disc-shaped ring in the wave shape is then cured to form a wave spring.

A method of making a carbon fiber wave spring includes forming a disc-shaped ring from prepreg carbon fibers. The disc-shaped ring is then formed into a desired wave shape. The disc-shaped ring in the wave shape is then cured to form a wave spring.

A wire material for an elastic member includes: inner circumferential-side reinforced fibers that are wound in a spiral form; outer circumferential-side reinforced fibers that are provided on an outer circumference of the inner circumferential-side reinforced fibers; and thermosetting resin that is provided in at least a part of the inner circumferential-side reinforced fibers and the outer circumferential-side reinforced fibers and firmly fixes the reinforced fibers with each other. An angle formed by a winding direction of the inner circumferential-side reinforced fibers and a center axis of the winding is 70 to 110. A winding direction of the outer circumferential-side reinforced fibers with respect to a center axis of the winding is along a direction of a tensile load applied to the wire material for the elastic member in accordance with a load applying torsional stress to the wire material for the elastic member as an externally applied load.

A wire material for an elastic member includes: inner circumferential-side reinforced fibers that are wound in a spiral form; outer circumferential-side reinforced fibers that are provided on an outer circumference of the inner circumferential-side reinforced fibers; and thermosetting resin that is provided in at least a part of the inner circumferential-side reinforced fibers and the outer circumferential-side reinforced fibers and firmly fixes the reinforced fibers with each other. An angle formed by a winding direction of the inner circumferential-side reinforced fibers and a center axis of the winding is 70 to 110. A winding direction of the outer circumferential-side reinforced fibers with respect to a center axis of the winding is along a direction of a tensile load applied to the wire material for the elastic member in accordance with a load applying torsional stress to the wire material for the elastic member as an externally applied load.

The coil spring according to the present invention is a coil spring that is formed by spirally winding a wire rod and that includes a core that is elastically deformable and a reinforced fiber layer including reinforcing fibers wound around an outer circumference of the core and a thermoset resin that firmly adheres the reinforcing fibers to one another, wherein, in at least a part of a surface layer of the reinforced fiber layer, a content percentage of the reinforcing fibers on an inner circumferential side of the coil spring is larger than a content percentage of the reinforcing fibers on an outer circumferential side of the coil spring.

Spring systems for subsea applications and equipment projects for the oil and gas industry are preferably manufactured from composite materials and include at least one pair of springs consisting of a first spring component and a second spring component, mounted so as to offer a first central contact region and double curvature and rebound areas forming a coupling. The pair of springs are thus, self-centering.