Blar i Studentoppgaver (TN-IKM / TN-IMBM) på emneord "fatigue"

Viser treff 1-12 av 12

    • Ageing of ships, LPG tankers 

      Ask, Martin (Masteroppgave/UIS-TN-IKM/2014;, Master thesis, 2015-01-15)
      During the last decades there have been several major ship accidents, and it is believed that old ships are more unsafe than newer ships. To get a better understanding of this phenomenon the thesis is investigating different ...

    • Analysis of forces in a subsea wellhead system supported by NeoDrill conductor anchor node 

      Andersen, Marianne Klepp (Masteroppgave/UIS-TN-IKM/2015;, Master thesis, 2015-06-15)
      During drilling operations the marine drilling riser is exposed to environmental loads like waves and currents, as well as loads from the rig. These environmental loads are transferred from the riser to the wellhead system. ...

    • Analysis of mooring wire rope termination with respect to bending fatigue 

      Bøe, Magnus Emil Myhre (Masteroppgave/UIS-TN-IKM/2014;, Master thesis, 2014-06-16)
      Mooring lines that are used on floating offshore units are subjected to bending at the end termination. Over-bending in some cases may cause the mooring line to suffer damage from fatigue. A countermeasure for this ...

    • Comparative study of deterministic and probabilistic fatigue assessment methods 

      Sæstad, Alexander (Masteroppgave/UIS-TN-IKM/2015;, Master thesis, 2015-06-15)
      The subject of this thesis is to compare the use of a deterministic and probabilistic assessment methods in fatigue analysis. The thesis focuses on the nominal stress method in the stresslife approach. Three different ...

    • Detectability of fatigue cracks in metals. 

      Alvi, Taimour Zafar (Masteroppgave/UIS-TN-IMBM/2020;, Master thesis, 2020)
      The repetitive cyclic loading are the main cause of fatigue in metals and consequently their failure. Furthermore, the defects due to fatigue such as surface breaking and sub-surface, drastically effects the integrity of ...

    • Evaluation of SCFs for stiffened tubular joints 

      Kleven, Anders (Masteroppgave/UIS-TN-IKM/2015;, Master thesis, 2015-06)
      In this thesis the field of stress concentration factors for use in fatigue analysis is explored. The focus is on stiffened tubular joints, which are common on offshore structures. An analysis methodology is established ...

    • Fatigue analysis of offshore wind turbine 

      Stava, Ole Magnus (Masteroppgave/UIS-TN-IKM/2012;, Master thesis, 2012)
      In this master thesis analyses will be conducted on a 5MW offshore wind turbine, with a jacket foundation. The goal is to investigate how seven different wind profiles affect fatigue in the blade root, the tower top and ...

    • Fatigue of service pipes 

      Augestad, André (Masteroppgave/UIS-TN-IKM/2012;, Master thesis, 2012)
      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 ...

    • Investigation of Material Property changes in HSLA Steel due to Weld Proximity 

      Larsson, Magnus; Larsson, Mattias (Masteroppgave/UIS-TN-IMBM/2019;, Master thesis, 2019-09-15)
      Standards and specifications apply a rule of thumb when determining the distance of two adjacent weld joints, but they rarely give any clear technical justification for the predetermined values. It is vital to understand ...

    • Optimization of wiresheave 

      Løland, Morten Ljosland (Masteroppgave/UIS-TN-IKM/2014;, Master thesis, 2014-06-06)
      The objective of this thesis is to optimize a 72” (1828,8 mm) wire sheave with respect to weight and rotational inertia. The sheaves are used as pulleys on derrick structures. Seven different design concepts were designed ...

    • Study of weld design and cost versus fabrication cost 

      Steinmoen, Lasse (Masteroppgave/UIS-TN-IKM/2013;, Master thesis, 2013)
      Increasing demand in economic- and time-efficiency, in the production and design phase, has led to the question if there is a possibility to save time and money on a more detailed analysis on which weld type to use. The ...

    • Use of coiled tubing from floaters and in arctic environments 

      Høllesli, Rosanna (Masteroppgave/UIS-TN-IKM/2012;, Master thesis, 2013-01)
      When coiled tubing (CT) operations are performed from floaters there is relative motion between the sea bottom and the topside equipment placed on the vessel deck. Some of the CT equipment is placed in a heave compensated ...