Blar i Vitenskapelige publikasjoner (TN-IMBM) på tittel
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Spectral characteristics of surface-layer turbulence in the North Sea
(Journal article, 2017-10)According to IEC 61400-1 and IEC 61400-3 standards, the wind load on the rotor-nacelle assembly of offshore wind turbines should be estimated from the Kaimal or Mann spectral models, unless site-specific full-scale ... -
Spin injection from EuS/Co multilayers into GaAs detected by polarized electroluminescence
(Peer reviewed; Journal article, 2019)We report on the successful spin injection from EuS/Co multilayers into (100) GaAs at low temperatures. The spin injection was verified by means of polarized electroluminescence (EL) emitted from AlGaAs/GaAs-based ... -
Stability analysis of a granite-based geopolymer sealant for CO2 geosequestration: In-situ permeability and mechanical behavior while exposed to brine
(Peer reviewed; Journal article, 2024)When considering the use of geopolymers (GPs), as potential alternatives for Portland cement, high durability during exposure to brine at encountered downhole is a key requirement. This study delves into the response of a ... -
Stability of Vessels in an Ice-free Arctic
(Peer reviewed; Journal article, 2020-09)One consequence of the declining ice cover in the Arctic is increased areas of open seas. These new open sea areas lead to some challenging aspects related to ship stability. Longer fetch lengths, associated with build-up ... -
State of the art in structural health monitoring of offshore and marine structures
(Peer reviewed; Journal article, 2023)This paper deals with state of the art in structural health monitoring (SHM) methods in offshore and marine structures. Most SHM methods have been developed for onshore infrastructures. Few studies are available to implement ... -
State-of-the-art of crack propagation modelling in tubular joints
(Peer reviewed; Journal article, 2019)Offshore structures are conventionally designed for a service life between 20-30 years and mostly used beyond their service life. They are operated up to the point where costs of operations, maintenance and repair exceed ... -
Station keeping of a subsea shuttle tanker system under extreme current during offloading
(Peer reviewed; Journal article, 2023)This paper presents the station keeping challenge of the subsea shuttle tanker (SST) design during underwater loading and offloading at a subsea well under an extreme current environment. The paper investigates the movement ... -
Statistical evaluation of tubular joint SCFs from test data and finite element analyses
(Peer reviewed; Journal article, 2023)Stress concentration factors (SCF) derived from both FEA and measurements from laboratory experiments are associated with uncertainties. To understand these uncertainties, SCF values can be determined from a series of tests ... -
Statistical Modeling and Applications of Joint Distributions for Significant Wave Height, Spectral Peak Period, and Peak Direction of Propagation: A Case Study in the Norwegian Sea
(Peer reviewed; Journal article, 2023)The estimation of long-term extreme response is a crucial task in the design of marine structures. The target extreme responses are typically defined by annual exceedance probabilities of 10-2 and 10-4. Various approaches ... -
Strength analysis of 3D printed carbon fibre reinforced thermoplastic using experimental and numerical methods
(Peer reviewed; Journal article, 2019)A study of strength of composite materials produced by 3D printing technology is presented. The samples fabrication and tests to determine the strength both in bending and in tension of the composite materials have been ... -
Structural dynamic analysis of semi-submersible floating vertical axis wind turbines
(Journal article; Peer reviewed, 2016-12)The strong and stable wind at offshore locations and the increasing demand for energy have made the application of wind turbines in deeper water surge. A novel concept of a 5 MW baseline Floating Vertical Axis Wind Turbine ... -
Structural Performance of GFRP Bars based High-Strength RC Columns: An Application of Advanced Decision-Making Mechanism for Experimental Profile Data
(Peer reviewed; Journal article, 2022)Several past studies have shown the use of glass fibre-reinforced polymer (GFRP) bars to alleviate the reinforced steel rusting issue in different concrete structures. However, the practise of GFRP bars in concrete columns ... -
Studies of Post-Fabrication Heat Treatment of L-PBF-Inconel 718: Effects of Hold Time on Microstructure, Annealing Twins, and Hardness
(Peer reviewed; Journal article, 2021-02)The widely adopted temperature for solid solution heat treatment (ST) for the conventionally fabricated Inconel 718 is 1100 °C for a hold time of 1 h or less. This ST scheme is, however, not enough to dissolve Laves and ... -
Studies on the Geometrical Design of Spider Webs for Reinforced Composite Structures
(Peer reviewed; Journal article, 2021-02)Spider silk is an astonishingly tough biomaterial that consists almost entirely of large proteins. Studying the secrets behind the high strength nature of spider webs is very challenging due to their miniature size. In ... -
Study of Bondura® Expanding PIN System – Combined Axial and Radial Locking System
(Peer reviewed; Journal article, 2021)Bolted connections are widely used in parallel plates and flanged joints to axially lock using the preload generated by the tightening torque and to constrain radial movements of the flanges by the surface friction between ... -
Study of Machinability in Drilling Operation of Enset–Sisal Hybrid Polyester Composite
(Journal article; Peer reviewed, 2022-07-14)Due to their light weight, low density, high-specificity strength, and ease of fiber surface treatment, natural-fiber-reinforced composites are recognized as the most suitable materials for interior part applications. ... -
Study of rail-wheel contact problem by analytical and numerical approaches
(Peer reviewed; Journal article, 2021)This study presents the rail wheel contact problems under normal and tangential categories. Both analytical and numerical approaches were used for modelling, where the analytical approach assumed elliptical contact patches ... -
Study of the Effects of Alkali Treatment and Fiber Orientation on Mechanical Properties of Enset/Sisal Polymer Hybrid Composite
(Peer reviewed; Journal article, 2023-01)Abstract In the manufacturing process of innovative fiber-based composite materials, natural fibers are among the most commonly employed reinforcements. In this study, Enset/Sisal (E/S) fiber with a polyester matrix was ... -
Study of the Performance of Natural Fiber Reinforced Composites for Wind Turbine Blade Applications
(Peer reviewed; Journal article, 2020)Availability of some form of energy is essential for human survival and social development. However, the way energy has been generated within the last century has brought forward the quest for generation of energy without ... -
Subsea FRP pipeline performance in external pressure: Failure and external pressure-induced buckling
(Peer reviewed; Journal article, 2021)The Subsea pipelines are subjected to high hoop stresses due to the hydrostatic pressure. When the internal pressure of the liquid has a higher value than the external hydrostatic one, there is a balance of the tensile and ...