BENDING FATIGUE of LOCKED COIL ROPES in the NEIGHBOURHOOD of CAST SOCKETS part 2: INFLUENCE of LUBRICATION

BENDING FATIGUE of LOCKED COIL ROPES in the NEIGHBOURHOOD of CAST SOCKETS part 2: INFLUENCE of LUBRICATION

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Round Table Application of Wire Rope Endurance Research – Delft 1993

ABSTRACT

ln the tests a single locked coil rope (diameter 31 mm, breaking strength 985 kN) was exposed to alternating bending at the cast socket, as described in Part 1 (O.I.P.E.E.C. Nantes). The present report is a description of the additional tests which show the correlation between lubrication condition, surface temperature and life time of the rope. According to these tests a correlation seems to exist between the surface temperature and the life time of the rope, this is why temperature measurements of the rope surface can be used for a first classification of the lubricants instead of the long lasting fatigue tests.

Author(s): Oplatka, Prof. Dr. G. ; Roth, Eur. lng. M.