Department of Mechanical and Structural Engineering and Materials Science (TN-IMBM): Nye registreringer
Viser treff 441-460 av 1741
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Damping estimation of large wind-sensitive structures
(Peer reviewed; Journal article, 2017)The adequacy of two identification techniques to accurately estimate the modal damping ratios (MDRs) from ambient vibration records is assessed for long-span suspension bridges with eigen frequencies close to or below 0.1 ... -
Measurements of Surface-Layer Turbulence in a Wide Norwegian Fjord Using Synchronized Long-Range Doppler Wind Lidars
(Peer reviewed; Journal article, 2017)Three synchronized pulsed Doppler wind lidars were deployed from May 2016 to June 2016 on the shores of a wide Norwegian fjord called Bjørnafjord to study the wind characteristics at the proposed location of a planned ... -
Development of Construction Material Using Wastewater: An Application of Circular Economy for Mass Production of Bricks
(Peer reviewed; Journal article, 2022)Water is one of the necessary ingredients for construction materials. Billions of gallons of clean water are wasted during the development of fired clay bricks. Similarly, the waste of clean water is a global issue. In ... -
Improved long-span bridge modeling using data-driven identification of vehicle-induced vibrations
(Peer reviewed; Journal article, 2020)The paper introduces a procedure to automatically identify key vehicle charac-teristics from vibrations data collected on a suspension bridge. The primarygoal is to apply a model of the dynamic displacement response of a ... -
Thermal performance of concrete with recycled aggregates from CDW plants
(Peer reviewed; Journal article, 2017)This investigation intends to analyse the thermal performance of concrete with recycled aggregates (RA) from construction and demolition waste (CDW) collected from several locations in Portugal. A total of 17 concrete mixes ... -
Application of short-range dual-Doppler lidars to evaluate the coherence of turbulence
(Peer reviewed; Journal article, 2016)Two synchronized continuous wave scanning lidars are used to study the coherence of the along-wind and across-wind velocity components. The goal is to evaluate the potential of the lidar technology for application in wind ... -
Numerical Investigation on Aerodynamic Characteristics of Dual-Rotor Wind Turbines
(Peer reviewed; Journal article, 2022)Improving power output and reducing costs are crucial to the sustainable development of offshore wind power. In the present study, a dual-rotor wind turbine (DRWT) is proposed to improve wind energy capture efficiency by ... -
Prediction of tensile strength in fused deposition modeling process using artificial neural network and fuzzy logic
(Peer reviewed; Journal article, 2022)Fused deposition modeling is a modern rapid prototyping technique that is used for swiftly replicating concept modeling, physical modeling, and end-of-line manufacture. Precision parameter selection is crucial for generating ... -
Barents Sea Oil and Gas 2025: Three Scenarios
(Chapter, 2015)What are some of the possible futures for Barents Sea oil and gas? This chapter draws upon the key trends and issues covered by the book’s thematic chapters and presents three scenarios on the prospects for Norwegian–Russian ... -
Dynamic Analysis and Extreme Response Evaluation of Lifting Operation of the Offshore Wind Turbine Jacket Foundation Using a Floating Crane Vessel
(Peer reviewed; Journal article, 2022)The jacket is the most widely-used fixed foundation for offshore wind turbines due to its superior strength and low installation cost in relatively deep waters. Floating crane vessels are commonly used to install jacket ... -
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 ... -
Distinguishing space groups by electron channelling: centrosymmetric full-Heusler or non-centrosymmetric half-Heusler?
(Peer reviewed; Journal article, 2020)X-ray emission under electron-channelling conditions is used to distinguish between a non-centrosymmetric half-Heusler and a centrosymmetric full-Heusler crystal. For TiCo1.5+xSn the space-group determination based on a ... -
Numerical Simulation of Breaking Wave Loading on Standing Circular Cylinders with Different Transverse Inclined Angles
(Peer reviewed; Journal article, 2020)The purpose of this paper is to numerically simulate the breaking wave past a standing cylinder with different transverse inclined angles. The numerical simulations are carried out by solving the Unsteady Reynolds-Averaged ... -
Numerical Simulation of Flow around Subsea Covers at High Reynolds Numbers
(Masteroppgave/UIS-TN-IKBM/2019;, Master thesis, 2020-01-15)Glass Reinforced Plastic (GRP) covers are widely used to protect the subsea equipment from external damage. In this work, numerical simulations of a fully developed turbulent boundary layer flow over square and trapezoidal ... -
Bridge buffeting by skew winds: A quasi-steady case study
(Peer reviewed; Journal article, 2022)The buffeting response of a 5000-m-long curved floating bridge is investigated for different mean wind directions, with emphasis on the wind load formulations and use of experimental data. Wind tunnel tests, with a section ... -
Comparing different CFD wind turbine modelling approaches with wind tunnel measurements
(Peer reviewed; Journal article, 2014)The performance of a model wind turbine is simulated with three different CFD methods: actuator disk, actuator line and a fully resolved rotor. The simulations are compared with each other and with measurements from a wind ... -
Experimental investigation of residual stress distribution on girth welds fabricated at proximity using neutron diffraction technique
(Peer reviewed; Journal article, 2022)Maintaining minimum distance between repair and existing welds often becomes impractical due to the presence of compact layouts, original welds of branches, nozzles, etc. on offshore structural elements, pipelines, and ... -
Experimental and Numerical Investigation of Residual Stress for Structural Integrity Assessment of Proximity Girth Welds
(PhD thesis UiS;, Doctoral thesis, 2023-01)Over the last decade, there has been a growing interest in the life extension of existing welded structures in offshore and renewable industry. During this phase of extension, repair of welded structures is a common practise ... -
A case study of offshore wind turbine positioning optimization methodology using a novel multi-stage approach
(Peer reviewed; Journal article, 2022)This investigation maximize the annual energy production (AEP) of a wind farm’s layout at a specific site using a novel multi-stage approach. The downstream wind turbines’ energy production decreases due to the reduced ... -
End-of-life solution prioritization for pre-cast concrete components aligning with circular economy targets
(Peer reviewed; Journal article, 2022)Circular economy (CE) targets provide an economic model to focus on the efficient use of resources by minimization of the waste, reduction of the linear consumption of natural resources, long-term value creation, and making ...