FEYRER: Drahtseile

Die zerstörungsfreie Prüfung von Brückenseilen und deren Endverbindungen

“…Die Prüfgeräte sind aus Permanentmagneten, meist Neodym‐Legierungen, aufgebaut, in der Gerätemitte sitzt eine gewickelte Spule oder Hallsensoren für die Messung einer induzierten Spannung [2]. Die magnetinduktive Seilprüfung erfolgt derart, dass das Drahtseil bis zur Sättigung magnetisiert wird und die Änderung dieses Magnetfelds entlang der Seilachse, welche in der Spule erfasst wird, in Form einer ausgegebenen Spannung gemessen wird.…”

Fatigue design of tension components: Revision and further development of EN 1993‐1‐11

“…Unsurprisingly the different approaches result in different values for the fatigue strength, see (11), (14), (15), (16), (17), (18) and (19). Due to the helical arrangement of a large number of wires a rope is a very damage-tolerant tension element in which the fracture is announced by breakage of single wires before rupture of the entire element.…”

“…Based on this at least a statement can then be made about the fatigue strength  C at N = 210 6 cycles. Unsurprisingly the different approaches result in different values for the fatigue strength, see (11), (14), (15), (16), (17), (18) and (19). Table 1 gives a comparison of requirements according to different references with corresponding fatigue strengths  C based on (17) and (18).…”

Development of Structural Design Method for Twisted Wires Suspension

“…9) Feyrer et al and I Gerdemeli et al used the finite element method (FEM) to model the three-dimensional geometry of wire ropes and determine the stresses generated. 4,5) Thus, there have been many studies on stress prediction for twisted wire structures, but they focused on the stress when a wire rope is in suspension, which is different from the suspension deformation in this study. In addition, the stiffness has not been evaluated because it was not assumed to be used as a spring.…”