Steel wire rope together with active heave compensation has been used for subsea deployment applications for many years. This results in cyclic bending over sheave loading being a major influence on the lifetime of the rope. As the requirement to install heavy subsea hardware in deeper and deeper water increase, there is a need to use large diameter steel wire rope as part of the deployment system. Many of the new fleet of construction ships are equipped with steel wire ropes in excess of 100 mm in diameter. Assessment of the fatigue life of such large diameter wire rope is uncertain due to the lack of suitable bend over sheave test data. This paper presents the results from a full scale bending fatigue investigation with 109 mm steel wire rope at tensions up to 330 tons, including the details of the fatigue testing system it was necessary to construct to perform the testing. One of the main findings from the testing was the significant influence of heat build up in the rope. This led to an extensive investigation into the thermal behaviour of the rope, which will also be presented in the paper. In addition the paper will also draw conclusions relating to the life time assessment of large diameter wire rope for subsea deployment applications.


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    Title :

    Bending fatigue testing of large diameter steel wire rope for subsea deployment applications


    Additional title:

    Biegeermüdungsprüfung von Stahlseilen mit großem Durchmesser für Unterseeverlegeanwendungen


    Contributors:


    Publication date :

    2008


    Size :

    6 Seiten, 11 Bilder, 1 Tabelle, 14 Quellen



    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English




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