Blar i Institutt for konstruksjonsteknikk på tittel
Viser treff 1521-1540 av 2470
-
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 ... -
Micromechanics-based identification of a ductile fracture model for three structural steels
(Journal article, 2020)From an engineering point of view, it is beneficial to reduce the number of mechanical tests required to calibrate the plasticity and fracture models of a structural material. In this study, the ductile fracture model for ... -
Microproportioning - Rheology of filler modified cement paste (matrix) with crushed aggregate fines and pozzolana
(Master thesis, 2018)This thesis presents a study on how crushed aggregate fines and pozzolana affects the rheological properties of a cement paste. Two approaches for investiagations of rheology properties were performed; mixing and measurements ... -
Microstructural changes and mass transport in cement-based materials: a modeling approach
(Peer reviewed; Journal article, 2021)A generic modeling framework is presented to relate microstructural changes, i.e. changes in the pore volume distribution and phase assemblage, and mass transport in cement-based materials. The modeling framework accounts ... -
Microstructure and mechanics of the bovine trachea: Layer specific investigations through SHG imaging and biaxial testing
(Peer reviewed; Journal article, 2022)The trachea is a complex tissue made up of hyaline cartilage, fibrous tissue, and muscle fibers. Currently, the knowledge of microscopic structural organization of these components and their role in determining the tissue’s ... -
Microstructure and nanomechanical behavior of an additively manufactured (CrCoNiFe)94Ti2Al4 high-entropy alloy
(Peer reviewed; Journal article, 2021)Recent substantial studies indicate that high-entropy alloys (HEAs) possess superior mechanical performance, including exceptional strength, high creep resistance, etc. However, additive manufacturing (AM), a burgeoning ... -
A microstructure informed and mixed-mode cohesive zone approach to simulating hydrogen embrittlement
(Peer reviewed; Journal article, 2022)Hydrogen induced failure under uniaxial tension is simulated in a duplex stainless steel considering microstructural feature of the material. There are three key ingredients in the modelling approach: image processing and ... -
A microstructure informed and mixed-mode cohesive zone approach to simulating hydrogen embrittlement
(Peer reviewed; Journal article, 2022)Hydrogen induced failure under uniaxial tension is simulated in a duplex stainless steel considering microstructural feature of the material. There are three key ingredients in the modelling approach: image processing and ...