Department of Mechanical and Structural Engineering and Materials Science (TN-IMBM): Nye registreringer
Viser treff 381-400 av 1741
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Road Transportation Challenges in the Arctic
(Peer reviewed; Journal article, 2020)Despite all efforts to mitigate global warming, its rate and magnitude are still rising where transportation is considered to be an important contributor. In the Arctic regions however, unstable weather conditions, strong ... -
Numerical simulations of flow around two tandem wall-mounted structures at high Reynolds numbers
(Peer reviewed; Journal article, 2020)In the present study, the flow around two-dimensional (2D) square and trapezoidal wall- mounted structures in tandem on a horizontal flat wall has been simulated using two-dimensional Reynolds-averaged Navier-Stokes (RANS) ... -
Numerical Analysis of the Effect of Offshore Turbulent Wind Inflow on the Response of a Spar Wind Turbine
(Peer reviewed; Journal article, 2020)Turbulent wind at offshore sites is known as the main cause for fatigue on offshore wind turbine components. Numerical simulations are commonly used to predict the loads and motions of floating offshore wind turbines; ... -
Compaction and Fluid—Rock Interaction in Chalk Insight from Modelling and Data at Pore-, Core-, and Field-Scale
(Peer reviewed; Journal article, 2020)Water weakening is a phenomenon that is observed in high porosity chalk formations. The rock interacts with ions in injected water and additional deformation occurs. This important effect needs to be taken into account ... -
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 ... -
Recent developments and trends in the friction testing for conventional sheet metal forming and incremental sheet forming
(Peer reviewed; Journal article, 2020)Friction is the main phenomenon that has a huge influence on the flow behavior of deformed material in sheet metal forming operations. Sheet metal forming methods are one of the most popular processes of obtaining finished ... -
Effect of Lubrication on Friction in Bending under Tension Test-Experimental and Numerical Approach
(Peer reviewed; Journal article, 2020)This paper is aimed to determine the value of coefficient of friction (COF) at the rounded edge of the die in the sheet metal forming operations using the bending under tension (BUT) test. The experimental part of the ... -
Modelling of Waves for the Design of Offshore Structures
(Peer reviewed; Journal article, 2020)For the design of structures we need to select design safety levels to ensure structures shall safely operate and not collapse. These levels are given in relevant safety standards. For these levels we need to identify the ... -
Evaluation of ballast failures during operations of semi-submersible rigs
(Peer reviewed; Journal article, 2019)Risk analysis/assessment is one of the challenges encountered during operations of offshore units on the Norwegian Continental Shelf (NCS). In recent years, the Petroleum Safety Authority (PSA) has focused on hazards ... -
A Relationship Between Breaking Wave Characteristics and Slamming Forces Acting on Jacket Structures
(Peer reviewed; Journal article, 2019)The goal of this study was to investigate and describe the relationship between breaking wave characteristics and total slamming forces acting on a jacket structure in shallow water, based on the experimental data collected ... -
Trends in seismic data acquisition in areas with surface ice
(Peer reviewed; Journal article, 2019)The Arctic has great significance in relation to the exploration and exploitation of its huge petroleum resources. Seismic surveys are the key part of petroleum exploration. Reflected sound waves are used to produce a 3D ... -
Pipeline shore crossing approaches in Arctic conditions
(Peer reviewed; Journal article, 2019)The development of the Arctic region will entail the construction of new infrastructure, in particular, subsea pipelines. Considering the lack of actual field practice, ecosystem vulnerability and lack of common Arctic ... -
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 ... -
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 ... -
Influence of 3D Printing FDM Process Parameters on Tensile Property of ULTEM 9085
(Peer reviewed; Journal article, 2019)3D printing is a promising digital manufacturing technique that produces parts, layer by layer. Fused deposition modeling (FDM) is a widely employed 3D printing technology that produces components by heating, extruding and ... -
Investigation of transitional turbulence models for CFD simulation of the drag crisis for flow over a sphere
(Peer reviewed; Journal article, 2019)The drag crisis is an interesting physical phenomenon for flow over bluff bodies, where the drag coefficient suddenly drops as the Reynolds number increases. This behavior is caused by the flow transitioning from laminar ... -
Field development optimization of waterflooding process using data assimilation methods
(Peer reviewed; Journal article, 2019)The application of data assimilation methods for field development optimization has been the subject of intense investigation during the past 10 years. Lately has seen remarkable progress in the ability of data assimilation ... -
Mineralogical alterations in calcite powder flooded with MgCl2 to study Enhanced Oil Recovery (EOR) mechanisms at pore scale
(Peer reviewed; Journal article, 2019)Seawater injection into chalk-reservoirs on the Norwegian Continental Shelf has increased the oil recovery and reduced seabed subsidence, but not eliminated it. Therefore, understanding rock–fluid interactions is paramount ... -
Topology optimization through stiffness/weight ratio analysis for a three-point bending test of additive manufactured parts
(Peer reviewed; Journal article, 2019)Topology Optimization (TO) is a technique that allows for increasingly efficient designs and its objective is to maximize the performance of mechanical systems or structure in a variety of fields. Attempts to employ TO for ... -
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 ...