Dynamic diagnostics investigations of steel wire rope condition evaluation

Abstract

Steel wire rope of twisted of steel wires are used in: cranes, bridges, architectural objects, conveyor belts, mining, oil and gas, fisheries and sea, forest and communications, ski lifts, elevators, funicular railways and other devices are responsible cargo and lifting persons. As a result, the quality of the steel wire ropes carries high quality requirements. One of these is integrity of the wires, strength of which defines steel rope properties. Exterior steel wire ropes defects can induce catastrophic consequences and make heavy losses to the property and to health of personnel. Defect detection problem of steel wire ropes extensively studied in many research works of the different countries, but it is still looking for methods to do this quickly and efficiently. This paper presents a dynamic diagnostic investigation of steel wire rope condition evaluation, when wire rope twisted from separate wires. Dynamic diagnostic investigation of steel wire rope used to carry out special experimental stand. Experimental investigations were carried according to a special methods. For experimental investigations use three different lengths (1350; 1450; 1550 mm) and three different thicknesses (3.92; 3.96; 4.0 mm) of steel wire ropes. Every tension steel wire rope was excitation harmoniously in the frequency range from 60 Hz to 560 Hz, when excitation step was 50 Hz. The measured vibration amplitude of total steel wire rope and broken wires. Identify defect detection regularities of steel wire ropes. Finally, result of investigation are presented and corresponding conclusions are drawn.