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Ultimate Compressive Strain and Ductility of LWAC Beams
(Master thesis, 2017)The purpose of this master thesis was to investigate confinement and ductility of lightweight aggregate concrete (LWAC) in compression. The main characteristics of LWAC in general are brittleness and uncontrolled crack ... -
Ultimate compressive strain in lightweight aggregate concrete beams
(Chapter, 2018)The major concern when using lightweight aggregate concrete (LWAC) in structural applications compared to normal weight concrete (NWC) is the more brittle post-peak behaviour and reduced ultimate strain, especially in ... -
Ultra-durable Icephobic Coating by Molecular pulley
(Journal article; Peer reviewed, 2019)Slide-ring crosslinked polydimethylsiloxane (PDMS) is designed and prepared for anti-icing/deicing application. Compared with the covalent crosslinks, the slidable crosslinks enhance the mobility of polymer networks and ... -
Ultra-robust icephobic coatings with high toughness, strong substrate adhesion and self-healing capability
(Peer reviewed; Journal article, 2022)Enabling surfaces with passive anti-icing properties is an emerging, facile, economical, and energy-saving strategy to mitigate the harm caused by ice accretion. However, the combination of icephobicity and robustness still ... -
Ultrafast self-healing and highly transparent coating with mechanically durable icephobicity
(Journal article; Peer reviewed, 2019)Excessive ice accretion on infrastructures can lead to severe damage and dysfunction. In the context of combating the build-up of unwanted icing and at the same time maintaining sunlight permeation, for instance on solar ... -
Uncertainty propagation through a point model for steady-state two-phase pipe flow
(Peer reviewed; Journal article, 2020)Uncertainty propagation is used to quantify the uncertainty in model predictions in the presence of uncertain input variables. In this study, we analyze a steady-state point-model for two-phase gas-liquid flow. We present ... -
Uncertainty quantification and sensitivity analysis for cardiovascular models
(Doctoral thesis at NTNU;2016:234, Doctoral thesis, 2016)The major challenge for applying cardiovascular models in personalized medicine is as follows: How certain are the predictions of a cardiovascular model, taking the natural variations and measurement uncertainty of model ... -
Uncertainty quantification and sensitivity analysis for computational FFR estimation in stable coronary artery disease
(Journal article; Peer reviewed, 2018)Purpose The main objectives of this study are to validate a reduced-order model for the estimation of the fractional flow reserve (FFR) index based on blood flow simulations that incorporate clinical imaging and ... -
Uncertainty quantification and sensitivity analysis informed modeling of physical systems
(Doctoral theses at NTNU;2019:115, Doctoral thesis, 2019) -
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 ...