Fibre rope testing
There are many different synthetic rope types multiplied by several different types of fibre. Yarns are produced with a multiplicity of finishes. As with steel wire rope, apparently insignificant differences dramatically alter performance. There are a number of clearly identified wear modes; internal and external abrasion, creep and stress rupture, thermal ageing and compression fatigue. Some fibres are more vulnerable to chemical degradation and hydrolysis. Often wear is concentrated at the termination. We design appropriate tests for the application, help interpret the results, give advice on design changes and better terminations and splices.
TTI Testing has led the development of a new nylon rope provided by Bridon suitable for permanent mooring of wave and tidal energy devices. A fatigue curve has been developed based on extensive testing over the last 2 years, funding by industry and the Carbon Trust.