Fatigue of a steel wire rope at various periodically changing loads

Steel ropes, just as other construction elements are liable to various changeable loads during their operation. If the loading patterns recur identically as for their value, direction and sense within constant time periods then we say that they are under an action of periodically changing loads and strain. This strain causes a fatigue deterioration of the rope. The results of fatigue tests of a 55 mm diameter round strand rope at various kinds of periodically changing loads have been presented in the paper. One of the specimens was tested on a Mohr and Federhaff testing machine with a unilateral periodically changing tension. Two other specimens were tested on P4-GIG-2 fatigue machine in the conditions of double-sided bending and periodically changing loads.

Author: J. Hankus