Browsing Institutt for konstruksjonsteknikk by Title
Now showing items 1512-1531 of 2463
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Mechanical response of low density expanded polypropylene foams in compression and tension at different loading rates and temperatures
(Journal article; Peer reviewed, 2020)Polymer foams are often used for impact mitigation and protection due to low weight and excellent energy absorbing capability. Depending on the application, different loading rates and environmental conditions can be ... -
Mechanical Response of Nanocrystalline Ice-Contained Methane Hydrates: Key Role of Water Ice
(Peer reviewed; Journal article, 2020)Water ice and gas hydrates can coexist in the permafrost and polar regions on Earth and in the universe. However, the role of ice in the mechanical response of ice-contained methane hydrates is still unclear. Here, we ... -
Mechanics of Porcine Heart Valves’ Strut Chordae Tendineae Investigated as a Leaflet–Chordae–Papillary Muscle Entity
(Peer reviewed; Journal article, 2020)Proper blood flow through the atrioventricular heart valves (AHVs) relies on the holistic function of the valve and subvalvular structures, and a failure of any component can lead to life-threatening heart disease. A ... -
Mechanics of Ultra-Thin Multi-Crystalline Silicon Wafers
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:199, Doctoral thesis, 2013)Nowadays, solar energy is one of the important green sources, with more than 80% of all commercial solar cells currently made from silicon wafer. The main purpose of using increasingly thinner silicon wafers for the ... -
Mechanisms and enhancement of CO2 condensation heat transfer
(Doctoral theses at NTNU;2020:236, Doctoral thesis, 2021)The aim of this thesis is to increase the understanding of the mechanisms governing Carbon Dioxide (CO2) condensation, and in that way finding a pathway towards a higher condensation efficiency. Liquefaction of CO2 occurs ... -
Melting cell based compensated design method for improving dimensional accuracy of additively manufactured thin channels
(Peer reviewed; Journal article, 2020)Powder-bed fusion additive manufacturing technology makes it possible to produce parts with complicated geometry and high accuracy. However, dimensional deviation caused by powder overmelting and dross formation is still ... -
A method for determining the ductile damage parameters of high strength steels and weld metal
(Peer reviewed; Journal article, 2023)The microvoid based Gurson-Tvergaard-Needleman (GTN) model is a powerful tool for predicting ductile fracture behavior, and application of such model to steels and welds needs the identification of microvoid related damage ... -
A methodology to study high-speed pantograph-catenary interaction with realistic contact wire irregularities
(Peer reviewed; Journal article, 2020)In high-speed rail operations, the irregularity of the overhead system is a typical disturbance that affects the pantograph-catenary interaction performance. The existing methods, which treat the contact wire irregularities ... -
Methods for characterising the steel–concrete interface to enhance understanding of reinforcement corrosion: a critical review by RILEM TC 262-SCI
(Journal article; Peer reviewed, 2022)The steel–concrete interface (SCI) is a complex, multi-phase and multi-scale system. It is widely known to influence the performance and long-term durability of concrete structures. However, a fundamental understanding of ... -
Methods for Earthquake Analysis
(Master thesis, 2012)Based on the need for effective solutions of structures response to seismic loading, this thesis includes the theoretical background, and explanation of several methods. There are many theories in the community, but the ... -
Methods for Preliminary Analysis of Floating Bridge Structures
(Chapter, 2016) -
Micro Proportioning - Use of Industrially Produced Filler - Flow Properties of the Matrix Phase as a Function of the Filler's Specific Surface Area
(Master thesis, 2016)Two water/cement-ratios (w/c), three filler contents (fi/c) within each w/c, and two admixture dosages within each fi/c, were measured. This resulted in twelve matrices with the Velde fillers to determine the matrix's flow ... -
Microgel Evolution at Three-Phase Contact Region and Associated Wettability Alteration
(Journal article; Peer reviewed, 2018)Wettability alteration induced by nanoparticle and polymer have a broad application range in the industry and attracts a growing attention. Microgel as a special material with polymer/colloid duality is a potential candidate ... -
Micromechanical modeling of plasticity, damage and fracture in aluminium alloys
(Master thesis, 2018)A microstructure-based modeling framework for ductile damage and failure has been examined and validated with experiments for an AlMgSi aluminium alloy. A limited number of material tests has been used to calibrate a porous ... -
Micromechanical Modelling and Simulation of Ductile Fracture in Metallic Materials
(Master thesis, 2016)This thesis is concerned with the modeling of a cellular automaton model of ductile fracture in metals involving significant micro-structure heterogeneities, based on the growth equations of Rice\&Tracey for the microvoids ... -
Micromechanical modelling of ductile fracture in aluminium alloys
(Doctoral theses at NTNU;2019:253, Doctoral thesis, 2019)To predict the behaviour of structural components, engineers often rely on numerical modelling and simulation to describe the mechanical response and failure. For an accurate assessment of the structural response, predictive ... -
Micromechanical modelling of ductile fracture in pipeline steel using a bifurcation-enriched porous plasticity model
(Peer reviewed; Journal article, 2021)In this paper, we investigate the possibility of predicting ductile fracture of pipeline steel by using the Gurson–Tvergaard–Needleman (GTN) model where the onset of void coalescence is determined based on in situ bifurcation ... -
Micromechanical modelling of fracture in ductile alloys with applications to high-strength steel
(Doctoral theses at NTNU;2020:313, Doctoral thesis, 2020) -
Micromechanical Modelling of Strain Localization and Fracture in Aluminium
(Master thesis, 2012)Aluminium is often treated as a homogeneous material. However, when investigated on a microscopic scale, a granular structure is observed. The mechanical properties of the constituents, together with the distribution of ...