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.

A wire adapted to an elastic member includes: a core that is made of metal or alloy and is elastically deformable; and an FRP layer configured to cover an outer surface of the core, and including fibers wound around the core, and thermosetting resin provided at least partially to the fibers and fixing the fibers to each other. A winding direction in which the fibers are wound around the core is along a direction of a tensile load out of the tensile load and a compressive load applied to the wire adapted to an elastic member based on a load applied from outside.

A suspension spring unit can be positioned between a vehicle body and a wheel support. The suspension spring unit may form a constituent part of the vehicle chassis, configured with spring bodies made from a fiber composite material. At least two ring bodies arranged in series may be made from a fiber composite material and may have a respectively closed contour. The two ring bodies may be connected to one another via at least one connecting element.

A suspension spring unit can be positioned between a vehicle body and a wheel support. The suspension spring unit may form a constituent part of the vehicle chassis, configured with spring bodies made from a fiber composite material. At least two ring bodies arranged in series may be made from a fiber composite material and may have a respectively closed contour. The two ring bodies may be connected to one another via at least one connecting element.

A method and system for increasing damping capacity utilizing dry friction between individual wires of a rope embedded in a component formed from a composite is illustrated. The individual wires allow inter-wire friction to occur during part vibration. 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-damping ropes are embedded in the body. The vibration-damping ropes may be elongated segments or may be a rope having connected ends that form one or more rings. Each vibration-damping rope includes an outer layer of wires that surrounds a plurality of inner wires. Inflowing composite material is prevented from passing by the outer layer of wires and into the inner wires during the manufacturing process, thereby forming voids between the inner wires.

A method and system for increasing damping capacity utilizing dry friction between individual wires of a rope embedded in a component formed from a composite is illustrated. The individual wires allow inter-wire friction to occur during part vibration. 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-damping ropes are embedded in the body. The vibration-damping ropes may be elongated segments or may be a rope having connected ends that form one or more rings. Each vibration-damping rope includes an outer layer of wires that surrounds a plurality of inner wires. Inflowing composite material is prevented from passing by the outer layer of wires and into the inner wires during the manufacturing process, thereby forming voids between the inner wires.

A strand profile (10) is proposed. The strand profile (10) extends in a longitudinal extent direction (22), the strand profile (10) having a first layer structure (24) arranged around the longitudinal extent direction (22) and a second layer structure (32) surrounding the first layer structure (24), the first layer structure (24) comprising a first multiplicity of layers (26), each layer (26) of the first layer structure (24) having multiple fibers (28), the second layer structure (32) comprising a second multiplicity of layers (34), each layer (34) of the second layer structure (32) having multiple fibers (36), the fibers (28) of the first multiplicity of layers (28) and the fibers (36) of the second multiplicity of layers (34) each extending in longitudinal extent directions (30, 38), the longitudinal extent directions (30) of the fibers (28) of the first multiplicity of layers (26) and the fibers (36) of the second multiplicity of layers (34) each being oriented at an angle with a magnitude in a range from 30 to 60, and preferably in a range from 40 to 50, with respect to the longitudinal extent direction (22) of the strand profile (10), the fibers (28) of the first multiplicity of layers (26) extending relative to the longitudinal extent direction (22) of the strand profile (10) in such a way that, in the presence of setpoint torsional loading of the strand profile (10), said fibers are subjected to longitudinal compressive loading in their longitudinal extent directions (30), the fibers (36) of the second multiplicity of layers (34) extending relative to the longitudinal extent direction (22) of the strand profile (10) in such a way that, in the presence of setpoint torsional loading of the strand profile (10), said fibers are subjected to longitudinal tensile loading in their longitudinal extent directions (38), the longitudinal extent directions (30) of the fibers (28) of adjacent layers (26) of the first multiplicity of layers (26) differing from one another by an angle with a magnitude in a range from 0 to 10, preferably 2 to 10 and even more preferably 2 to 6, the longitudinal extent directions (38) of the fibers (36) of adjacent layers (34) of the second multiplicity of layers (34) differing from one another by an angle with a magnitude in a range from 0 to 10, preferably 2 to 10 and even more preferab

A method and system for increasing damping capacity utilizing dry friction between individual wires of a rope embedded in a component formed from a composite is illustrated. The individual wires allow inter-wire friction to occur during part vibration. 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-damping ropes are embedded in the body. The vibration-damping ropes may be elongated segments or may be a rope having connected ends that form one or more rings. Each vibration-damping rope includes an outer layer of wires that surrounds a plurality of inner wires. Inflowing composite material is prevented from passing by the outer layer of wires and into the inner wires during the manufacturing process, thereby forming voids between the inner wires.

A shock absorber is provided, that includes an adhesive tape portion, a base material stacked on the adhesive tape portion, and a polyurea resin layer stacked on the base material, wherein the polyurea resin layer is divided into a plurality of regions by a cut. A corrosion prevention material and a heat insulating material also include the same adhesive tape portion, the same base material, and the same polyurea resin layer.

A shock absorber is provided, that includes an adhesive tape portion, a base material stacked on the adhesive tape portion, and a polyurea resin layer stacked on the base material, wherein the polyurea resin layer is divided into a plurality of regions by a cut. A corrosion prevention material and a heat insulating material also include the same adhesive tape portion, the same base material, and the same polyurea resin layer.