Blar i Institutt for konstruksjonsteknikk på tittel
Viser treff 2381-2400 av 2483
-
Uncertainty quantification and sensitivity analysis of material parameters in crystal plasticity finite element models
(Journal article, 2018)A number of studies have directly compared measurements of polycrystals’ deformation to the solution of a crystal plasticity model of the same polycrystal. An accurate representation of the full 3D microstructure and the ... -
Uncertainty quantification and sensitivity analysis of vascular hemodynamics. Application to the common carotid artery
(Doctoral theses at NTNU;2024:235, Doctoral thesis, 2024)Cardiovascular diseases have been the leading cause of death globally for the past decades. Many cardiovascular diseases are a result of structural changes in the arterial wall, which modify its stiffness. Thus, arterial ... -
Uncertainty quantification for multiphase flow
(Doctoral theses at NTNU;2021:410, Doctoral thesis, 2021)The purview of this thesis is insight into, and development of, methods for uncertainty quantification in multiphase flow. The work is directed towards commercial simulators for transport of gas and liquid in pipelines and ... -
Uncertainty quantification of computational coronary stenosis assessment and model based mitigation of image resolution limitations
(Journal article; Peer reviewed, 2019)Coronary artery disease is one of the leading causes of death globally. The hallmark of this disease is the occurrence of stenosed coronary arteries which reduce blood flow to the myocardium. Severely stenosed arteries can ... -
Unconventional growth of methane hydrates: A molecular dynamics and machine learning study
(Peer reviewed; Journal article, 2023)Natural gas hydrate reservoirs in natural settings subjected to external driving forces are deformed and locally dissociated, while they reform due to endothermic dissociation reaction. Here we report a molecular dynamics ... -
Understanding the hydrogen effect on pop-in behavior of an equiatomic high-entropy alloy during in-situ nanoindentation
(Peer reviewed; Journal article, 2021)The variations in the pop-in behavior of an equiatomic CoCrFeMnNi high-entropy alloy under different hydrogen charging/discharging conditions were characterized via in-situ electrochemical nanoindentation. Results show ... -
Understanding the role of hollow sub-surface structures in reducing ice adhesion strength
(Journal article; Peer reviewed, 2019)The accretion of ice on exposed surfaces infers detrimental effects on many aspects of life and technology. Passive icephobic coatings, designed by strategies towards lowering ice adhesion to mitigate the icing problems, ... -
Undersøkelse av stålrørspeler og standardiserte pelspisser
(Master thesis, 2009) -
Undersøkelser av ledende anodemaling ved katodisk beskyttelse av armert betong anvendt på bruer og prøvefelt.
(Master thesis, 2019)Katodisk beskyttelse brukes til å bekjempe armeringskorrosjon i betong, hovedsakelig forårsaket av kloridinntrengning. Kort fortalt stanses korrosjonen ved å gjøre armering til en enhetlig katode ved å montere en ekstern ... -
Uniaxially Stiffened Steel Plates: In-plane and Out-of-plane loads
(Master thesis, 2022)Denne masteroppgaven omhandler oppførsel av avstivede platefelt av stål. Den består av et litteraturstudium, utregninger for hånd og analyse via elementmetoden. Eurocodene 1993-1-1 og 1993-1-5 utgjør grunnlaget for ... -
A unified constitutive model for pressure sensitive shear flow transitions in moderate dense granular materials
(Peer reviewed; Journal article, 2021)Granular shear flows exhibit complex transitional regimes that are dramatically affected by the pressure level and shear stress state. New advances in granular shear tests at low pressure have enlightened the understanding ... -
Unit cell simulations and porous plasticity modelling for strongly anisotropic FCC metals
(Journal article; Peer reviewed, 2017)The macroscopic behaviour of anisotropic porous solids made from an aggregate of spherical voids embedded in a plastically anisotropic matrix material is investigated by means of unit cell simulations. Plastic yielding of ... -
Unraveling adhesion strength between gas hydrate and solid surfaces
(Peer reviewed; Journal article, 2021)Natural gas hydrate is a promising future energy source, but it also poses a huge threat to oil and gas production due to its ability to deposit within and block pipelines. Understanding the atomistic mechanisms of adhesion ... -
Unraveling Ice–Solid Interface Rupture Dynamics: Insights from Molecular Dynamics Simulations
(Peer reviewed; Journal article, 2024)Unwanted icing on exposed surfaces poses significant risks, driving the quest for effective anti-icing mechanisms. While fracture mechanics concepts have been developed for designing coatings that weaken the ice–solid ... -
Unraveling the influence of surface roughness on oil displacement by Janus nanoparticles
(Peer reviewed; Journal article, 2023)Janus nanoparticles (JNPs) possess great potential in recovering the residual oil from reservoirs, however, the fundamental interaction mechanisms among nanoparticles, the oil, and reservoir wall characteristics remain to ... -
Unravelling the mystery of fish scales in lowering ice adhesion
(Peer reviewed; Journal article, 2024)The influence of static surface properties, such as free energy, toughness, and elasticity, on icephobicity has been extensively researched and documented in existing literature. However, there remains a limited understanding ... -
Updating of numerical models for enhanced dynamic assessment of existing structures - Analysing parameters for model updating of a riveted steel railway bridge, based on the sensitivity method
(Master thesis, 2016)Updating a numerical model of a real structure is an important tool to enhance an existing model, such that it represents the structure more accurately. To assess the current state of a structure, and predict the remaining ... -
The use of a Laguerrian expansion basis as Volterra kernels for the efficient modeling of nonlinear self-excited forces on bridge decks
(Peer reviewed; Journal article, 2021)In the last decade, the bridge aerodynamics community has pivoted towards the investigation and prediction of nonlinear aerodynamic phenomena. Several nonlinear models have been suggested, but the research community has ... -
Use of Concrete for Road Infrastructure: A SWOT Analysis Related to the three Catchwords Sustainability, Industrialisation and Digitalisation.
(Peer reviewed; Journal article, 2019)This paper aims at identifying the direction for more sustainable development of the use of concrete in road infrastructure in an industrialised context. The increase in the global mean temperature is one of the most severe ... -
Use of damage-based mesh adaptivity to predict ductile failure in blast-loaded aluminium plates
(Journal article; Peer reviewed, 2017)This study uses experimental data to evaluate the capabilities of a numerical model in EUROPLEXUS (EPX) to predict ductile failure in thin aluminium plates subjected to blast loading. The loading was generated using a shock ...