Now showing items 1049-1068 of 1695

    • Mooring designs for a combined wind and wave energy system in intermediate water depth 

      Fjermedal, Sindre (Master thesis, 2023)
      Over the past few decades, the renewable energy industry has expanded offshore in response to the growing demand for clean and sustainable energy. Larger structures with greater power output and less visual disturbance ...
    • Mooring for Floating Structure in Deep Waters along with a Case Study in ABAQUS 

      Jafari Hossein (Master thesis, 2021)
      Available literature on offshore mooring is very scattered, unorganized, and available codes and guidelines are very conservative while determining design parameters, such corrosion rate, fatigue factor etc. Mooring design ...
    • Mooring systems analysis of floating wind turbines in Italian seas 

      Re, P.; Passoni, G.; Gudmestad, Ove Tobias (Peer reviewed; Journal article, 2019)
      In recent years, interest in exploiting wind power in deep waters has grown, with the realization of floating structures that could accommodate a turbine and produce electricity. One of the many challenges that these ...
    • Motstand mot kloridinntrengning i betong med blandingsementer, flygeaske og silikastøv 

      Ali, Qasim (Masteroppgave/UIS-TN-IKM/2011;, Master thesis, 2011)
      Oppgaven presenterer resultater fra et eksperimentelt arbeid som omfatter ”kloridbestandigbetong” også kalt betong med blandingssement. I forsøksprogrammet har egenskaper som kloridinntrengning, elektrisk motstand og 28 ...
    • Muligheter og utfordringer i forbindelse med videre utvikling av Tilstandsbasert Vedlikehold på Ula og Tambar 

      Syre, Bjarne (Masteroppgave/UIS-TN-IKM/200, Master thesis, 2009)
      Tilstandsbasert vedlikehold er gjennom de siste årene blitt en foretrukket type vedlikehold hvor målet er å utføre vedlikehold når det er nødvendig. Ved en suksessfull utførelse av tilstandsovervåking og tolking av data ...
    • Multi objective parametric optimization and composite material performance study for master leaf spring 

      Batu, Temesgen; Lemu, Hirpa Gelgele; G. Michael, Elias (Peer reviewed; Journal article, 2021-03)
      Design optimization of product with the objective of reducing weight is one of current focuses in a product design. In the vehicle industry, in particular, weight reduction has significant impact on vehicle efficiency ...
    • Multiphysics Modeling and Numerical Simulation in Computer-Aided Manufacturing Processes 

      Trzepiecinski, Tomasz; dell’Isola, Francesco; Lemu, Hirpa G. (Peer reviewed; Journal article, 2021)
      The concept of Industry 4.0 is defined as a common term for technology and the concept of new digital tools to optimize the manufacturing process. Within this framework of modular smart factories, cyber-physical systems ...
    • New Advances and Future Possibilities in Forming Technology of Hybrid Metal–Polymer Composites Used in Aerospace Applications 

      Trzepieciński, Tomasz; Najm, Sherwan M; Sbayti, Manel; Belhadjsalah, Hedi; Szpunar, Marcin; Lemu, Hirpa G. (Peer reviewed; Journal article, 2021-08)
      Fibre metal laminates, hybrid composite materials built up from interlaced layers of thin metals and fibre reinforced adhesives, are future-proof materials used in the production of passenger aircraft, yachts, sailplanes, ...
    • New approach to the transportation and installation of heavy-weighted equipment offshore 

      Chernov, Dmitrii (Masteroppgave/UIS-TN-IKM/2015;, Master thesis, 2015-06-15)
      Installation of offshore equipment is a huge branch of business in the oil and gas industry. Almost every offshore project requires heavy-weighted equipment, which should be installed on the seabed. Recently, oil and gas ...
    • A new crack spacing model for reinforced concrete specimens with multiple bars subjected to axial tension using 3D nonlinear FEM simulations 

      Naotunna, Chavin Nilanga; Samarakoon, Mudiyansele Samindi Manjula K; Fosså, Kjell Tore (Peer reviewed; Journal article, 2021-10)
      Crack spacing is a governing parameter in widely used crack width calculation models. Axial tensile experiments are conducted to examine the crack spacing behavior of reinforced concrete specimens with multiple reinforcement ...
    • New jack-up concept for Arctic conditions 

      Urycheva, Maria (Masteroppgave/UIS-TN-IKM/2013;, Master thesis, 2013)
      Arctic exploration is one of the main trends in today’s oil and gas industry. In shallow waters jack-up mobile drilling units are often used for drilling outside the ice season. The operating period of the jack-ups is ...
    • Next Generation IMR RROV/AUV/eROV operations 

      Bråten, Erik (Masteroppgave/UIS-TN-IKM/2017;, Master thesis, 2018-02)
      The oil and gas industry is rapidly changing. The oil price is fluctuating and there has currently been an excess of personnel. Today's Remote Operated Vehicle (ROV) operations are demanding and costly, requiring a support ...
    • Nitrogas HeliNite system 

      Pettersen, Benjamin (Masteroppgave/UIS-TN-IKM/2015;, Master thesis, 2015-06-13)
      In today’s leak detection market the substance HeliNite is widely used. It contains helium and nitrogen gas, and offers highly sensitive leak detection. The company Nitrogas AS has patented and constructed a nitrogen ...
    • Noise filtering from a nonlinear system by using AANN 

      Mathisen, Mats Leander (Masteroppgave/UIS-TN-IKM/2010;, Master thesis, 2010)
      In order to run a gas turbine, the operator (be it human or automatic) needs to monitor the conditions of the various parts inside it. Pressures, temperatures, mass flows, vibrations, power output. These properties all ...
    • Non-Intrusive Inspection (NII) of pressure vessels 

      Eriksson, Andreas (Masteroppgave/UIS-TN-IKM/2015;, Master thesis, 2015-09-14)
      The aim of this thesis is to identify and recommend vessels that are suitable for inspection according the NII methodology, DNV-RP-G103. The theoretical guideline used during the analysis, DNV-RP-G103, was chosen since it ...
    • Non-linear buckling analysis of ship hull stiffened panels 

      Hacihamud, Enes; Dahl, K; Gabrielsen, O.; Lemu, Hirpa G.; Siriwardane, Sudath C. (Peer reviewed; Journal article, 2023)
      Stiffened panels are crucial in maritime applications, where buckling is a primary structural failure concern. Typically, assessing the buckling capacity of these panels relies on established guidelines like DNV-RP-C201 ...
    • Non-linear buckling analysis of stiffened panels 

      Hacihamud, Enes (Master thesis, 2022)
      Nonlinear buckling capacity analysis has become a reliable practice in order to investigate the buckling capacities for cases that do not fall into the scope of the traditional standards. DNV has issued the recommended ...
    • Non-linear finite element analysis of tubular X joint with selected geometry 

      Ghanem Nia, Nima (Masteroppgave/UIS-TN-IKM/2012;, Master thesis, 2012)
      “Tubular Joints” play a very important and quite vital role in most of the marine structures; we can see maybe hundreds of them in every even simple jacket or steel platforms. It is obvious that having full control about ...
    • Nonlinear analysis of a space frame subjected to loading from dropped objects 

      Singelstad, Anne Kathrine Vaagsnes (Masteroppgave/UIS-TN-IKM/2009, Master thesis, 2009)
      There is always a risk of an object being dropped during offshore lifting operations. Any underlying structure or equipment might be severely damaged, and in worst case, lives might be lost. Consequently, structures which ...
    • Nonlinear fatigue life prediction model based on the theory of the S-N fatigue damage envelope 

      Bjørheim, Fredrik; Pavlou, Dimitrios; Siriwardane, Sudath C. (Peer reviewed; Journal article, 2022)
      A nonlinear model is proposed in light of the theory of isodamage curves, to assess the cumulative fatigue damage under multistage loading. The isodamage curves were developed through the theory of the S-N fatigue damage ...