Abstract:
A non-destructive evaluation method for fiber rope comprises the following steps. A rope construction type is identified. An expected life of the rope construction type is determined. At least two characteristics of the rope construction types are identified. A characteristic adjustment factor is stored for at least one of the at least two characteristics. At least one rope characteristic interaction between at least two of the identified rope characteristics is identified. An interaction adjustment factor is stored for the at least one identified rope characteristic interaction. An adjusted remaining life is calculated based the expected life, the at least one characteristic adjustment factor, and the at least one interaction adjustment factor.
Abstract:
A method for non-destructively estimating a current physical condition of a cordage product in-service is described. The method involves obtaining sensor data associated with the cordage product while in-service handling a load. The sensor data includes any combination of cordage product elongation data, applied load data, and diametric data. The method further includes determining an axial stiffness value associated with the cordage product based on the sensor data and estimating a health state of the cordage product based on die determined axial stillness value, The estimated health state is indicative of the current physical condition of the cordage product.
Abstract:
A rope structure is formed by forming a sub-rope structure comprising a core and a jacket, twisting the sub-rope structure to form a twisted sub-rope structure, and forming the rope structure by braiding together a plurality of lengths of the twisted sub-rope structure.
Abstract:
A fiber structure for forming a rope structure has a base matrix of base fiber material and at least one lubricity portion of lubricity material. The lubricity material determines a lubricity of at least a portion of a surface of the fiber structure.
Abstract:
A rope structure or method of forming a rope structure comprises a rope comprising a plurality of strands. The rope comprises first and second splice locations, an eye region between the first and second splice locations, and a main region. The main region of the rope is located adjacent to the first splice location and in an opposite direction along the rope from the eye region. At least one of the strands is a selected strand. An extracted portion of the at least one selected strand is extracted from the rope and inserted into the rope such that a bridge portion of the at least one selected strand extends between the first and second splice locations and a diameter of the rope is substantially consistent in the main region.
Abstract:
A rope assembly that is adapted to extend between first and second attachment points comprises a line arranged to define a plurality of loops and at least one pair of organizers. The at least one pair of organizers is configured to engage the line such that line segments of the line between the at least one pair of organizers are maintained in a desired relationship with each other and such that the desired relationship facilitates transfer of loads through the rope assembly between the first and second attachment points.
Abstract:
A dragline excavator system has a support assembly, a hoist coupler assembly suspended from the support assembly, a bucket assembly suspended from the hoist coupler assembly, a sheave assembly supported by the hoist coupler assembly, a drag coupler assembly, and at least one dump rope operatively connected to the drag coupler assembly and the bucket assembly. The at least one dump rope extends through the sheave assembly. The at least one dump rope is formed of at least one fiber made from at least one of high modulus polyethylene (HMPE), poly-p-phenylenebenzobisoxazole (PBO), liquid crystal polymer (LCP), aromatic polyamide (Aramid), polyester, nylon, polyolefin, polypropylene (PP), carbon, and glass.
Abstract:
A rope structure comprising a plurality of formed composite strands. Each of the formed composite strands comprises fiber material and matrix material. The fiber material within the matrix material is twisted. The shapes of the plurality of formed composite strands are predetermined to facilitate combination of the plurality of composite strands into the rope structure.
Abstract:
A method for non-destructively estimating a current physical condition of a cordage product in-service is described. The method involves obtaining sensor data associated with the cordage product while in-service handling a load. The sensor data includes any combination of cordage product elongation data, applied load data, and diametric data. The method further includes determining an axial stiffness value associated with the cordage product based on the sensor data and estimating a health state of the cordage product based on die determined axial stillness value, The estimated health state is indicative of the current physical condition of the cordage product.