Fatigue of service pipes
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The first part of this thesis will present the principle of fatigue, vibration and damping of service pipes on the Norwegian continental shelf. Thus us used for the creation of a screening methodology for prioritizing service pipes with regards to susceptibility to fatigue damage. The methodology provides the user with a toolset for identification and evaluation of the various service pipes in operation. An acceptance criterion of a damping ratio of 0.3 for service pipes has been identified. Pipes with a damping ratio lower than 0.3 has been shown to experience high amplitudes in the case of resonance freqiencies.
Master's thesis in Mechanical engineering