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In this investigation, a ball joint, which is the major functional part in a car, has been modeled to predict its fatigue life. In order to confirm the accuracy of the research, initially a modal analysis was performed, so the natural frequency of the structure was verified. It has been found that, the calculated natural frequency of the structure is much lower than its own natural frequency. The results, which were confirmed by experimental studies, have been interpreted by using analysis techniques and compared with theoretical outcomes.

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This thesis reports about the case study of fatigue analysis based on the observed oceanographic data. Presumed wind power generation facility for analysis consists of the tower which has a 2400kW generator, and mono-pile foundation constructed on the bottom of the sea depth 10m outside the breakwater. Fatigue analysis was executed by zero-uperossing method and rain-flow method.It was concluded that a fatigue life of offshore wind power generation facility could be analyzed by those methods, and it was proved that the facility with the mono-pile foundation has a long enough fatigue life even when it couldn't be repaired with the inspection prescribed by DNV.