A twisting device (10) for twisting or stranding electrical or optical lines (12) to form a line bundle (13). The twisting device (10) comprises at least one first twisting head (15) and a clamping device (25). The first twisting head (15) and the clamping device (25) are spaced apart from each other. The twisting device (10) has at least one detecting device (30) for capturing information indicative of a lay length of the line bundle (13). The at least one detecting device (30) can be moved relative to the first twisting head (15) and the clamping device (25).

A rope, a system and a method for measuring one or more properties of a rope. A property evaluation system for ropes can be deployed for a number of different applications including, but not limited to, moving lines, e.g., crane or winch and static lines, e.g., mooring lines, stays, etc., to evaluate physical properties of the ropes and, in some cases, to help evaluate structural health of the ropes. A sheave assembly (10) may transmit a signal into a rope (14) to measure at least one property of the rope. At least one sensor (25) may be coupled to or assembled in the rope to measure at least one property of the rope.

A rope, a system and a method for measuring one or more properties of a rope. A property evaluation system for ropes can be deployed for a number of different applications including, but not limited to, moving lines, e.g., crane or winch and static lines, e.g., mooring lines, stays, etc., to evaluate physical properties of the ropes and, in some cases, to help evaluate structural health of the ropes. A sheave assembly (10) may transmit a signal into a rope (14) to measure at least one property of the rope. At least one sensor (25) may be coupled to or assembled in the rope to measure at least one property of the rope.

A method for producing a tubular underwater pipe including: assembling a structure of peripheral metal elements (3A, 3B, 3C) wound in an S-Z configuration about a central flexible core (1) as the core is driven in movement along its longitudinal axis; providing an inductive sensor (12) arranged for rotation about the central flexible core (1) in a manner synchronized with the longitudinal movement of the core so that the sensor scans the periphery of the structure opposite and in the immediate proximity of peripheral elements wound about the core and during the assembly step; using the sensor (12) to acquire measurement signals (S) of which the amplitude varies according to whether or not the sensor (12) is located opposite a peripheral element during the rotation of the sensor (12); and using the measurement signals to control the positioning of the assembled peripheral elements.

A twisting device (10) for twisting or stranding electrical or optical lines (12) to form a line bundle (13). The twisting device (10) comprises at least one first twisting head (15) and a clamping device (25). The first twisting head (15) and the clamping device (25) are spaced apart from each other. The twisting device (10) has at least one detecting device (30) for capturing information indicative of a lay length of the line bundle (13). The at least one detecting device (30) can be moved relative to the first twisting head (15) and the clamping device (25).