Figure 2: Simulation of the transfer moulding and process monitoring during vulcanization for validation of the production run (Credit: Vulkan Couplings).


test and the service-life tests. T e dynamic test is performed under static preload and superposition of a vibratory torque with a frequency of usually 10Hz. Then the core temperatures in the elastic elements are recorded to be able to verify the calculated power loss fi gure. T e service- life test, under increasing load with three


times the rated torque, is considered to have been passed if a defined number of cycles have been withstood without damage. T e stresses and strains that the ACOTEC elastomer must endure in this test represent signifi cant overloads, which would never occur at this quantity during normal usage.


AUSTRALIA | SINGAPORE | VIETNAM | MEXICO


Figure 3: Service life test with three-fold torque (left) and dynamic test (right) (Credit: Vulkan Couplings).


Ship & Boat International July/August 2010


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