Blar i Department of Mechanical and Structural Engineering and Materials Science (TN-IMBM) på tittel
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New Advances and Future Possibilities in Forming Technology of Hybrid Metal–Polymer Composites Used in Aerospace Applications
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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 ... -
Norwegian pipeline gas from an asset management perspective: present and future
(Masteroppgave/UIS-TN-IKM/2013;, Master thesis, 2013-06)With the growth of demand for new energy, natural gas was predicted to be in a golden age, where the energy commodity would act as a transitional energy source (due to its low emission) towards greener energy goals within ... -
Norwegian value creation related to development of offshore oil and gas fields
(Masteroppgave/UIS-TN-IKM/2016;, Master thesis, 2016-06-15)The development of petroleum field generates substantial values for Norway. In every development project there is always “local” and “global” contentment and Norwegian value creation depends on the combination of the two. ... -
Note on estimating bed shear stress caused by breaking random waves
(Peer reviewed; Journal article, 2021-04)This note presents a method of how the bed shear stress caused by breaking random waves on slopes can be estimated. This is obtained by adopting the Sumer et al. (2013) bed shear stress formula due to spilling and plunging ... -
Novel deconvolution method for extreme FPSO vessel hawser tensions during offloading operations
(Peer reviewed; Journal article, 2022)Robust prediction of extreme hawser tensions during Floating Production Storage and Offloading (FPSO) operations is an important safety and reliability concern. Excessive hawser tension may occur during certain environmental ... -
A novel design approach for estimation of extreme load responses of a 10-MW floating semi-submersible type floating wind turbine
(Peer reviewed; Journal article, 2022)Offshore structures are constructed to withstand extreme wind and wave-induced loads, so studying these extreme loads is vital as it allows offshore structures, e.g., wind turbines, to be designed and operated with minimal ... -
A novel design of a hybrid glulam-steel substructure for the IEA 15-MW floating wind turbine
(Peer reviewed; Journal article, 2023)Wind energy has become increasingly recognised as a very promising type of renewable energy. In addition, floating offshore wind turbines have facilitated the development of electricity production in intermediate (45-150 ... -
A novel method for prediction of extreme wind speeds across parts of Southern Norway
(Peer reviewed; Journal article, 2022)The paper describes a novel structural reliability method, particularly suitable for multi-dimensional environmental systems, either measured or numerically simulated over a sufficient period, resulting in sufficiently ...