Browsing Institutt for konstruksjonsteknikk by Title
Now showing items 1989-2008 of 2483
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Pure Mode I Fracture Toughness Determination in Rocks Using a Pseudo‑Compact Tension (pCT) Test Approach
(Journal article, 2020)Mode I fracture toughness (KIC) quantifies the ability of a material to withstand crack initiation and propagation due to tensile loads. The International Society for Rock Mechanics (ISRM) has proposed four suggested methods ... -
Pyrrhotite in concrete aggregate. Introduction to mechanism, damage potential and ongoing research
(Chapter, 2022)Pyrrhotite is an iron sulfide which when present in concrete aggregate may lead to expansive reactions, cracks and finally disintegration of the concrete. This potential risk when using aggregates containing sulfides in ... -
Python/DIANA framework for robust nonlinear analysis of reinforced concrete beams
(Master thesis, 2022)Et Python/Diana-rammeverk for robust ikkelineær elementanalyse (NLFEA) av armerte betongbjelker i 2D har blitt laget. Rammeverket består av fire skript som inneholder en rekke instruksjoner bestående av Python-kommandoer ... -
Quantitative 3D X-ray Imaging of Densification, Delamination and Fracture in a Micro-Composite under Compression
(Journal article; Peer reviewed, 2015)Phase-contrast three-dimensional tomograms showing in unprecedented detail the mechanical response of a micro-composite subjected to a mechanical compression test are reported. The X-ray ptychography images reveal the ... -
A quantitative study of salinity effect on water diffusion in n-alkane phases: from pore-scale experiments to molecular dynamic simulation
(Peer reviewed; Journal article, 2022)Numerous mechanisms have been proposed to untangle the effect of a low concentration of dissolved salts in the water flooding medium. One potential mechanism for enhanced oil movement is proposed with osmosis effect, ... -
Quasi-static and dynamic behaviour of fillet welded connections
(Master thesis, 2016)Introduction Understanding the behaviour of the joints in a construction is crucial for structural engineers. In fact, the behaviour of steel joints exposed to static loading is well documented. Steel joints exposed to ... -
Quasi-static and dynamic indentation of offshore pipelines with and without multi-layer polymeric coating
(Journal article; Peer reviewed, 2018)Offshore pipelines are occasionally subjected to accidental impact loads from trawl gear or anchors, which may damage the pipe. In this study, a series of indentation experiments carried out on offshore steel pipes covered ... -
Quasi-Static and Dynamic Testing of Annealed Float Glass
(Journal article; Peer reviewed, 2018)Three different experimental set-ups were employed in the investigation of the fracture strength of annealed float glass. These included four-point bending tests on three different specimen sizes, and quasi-static and ... -
Quasi-static behaviour of crash components with steel skins and polymer foam cores
(Journal article; Peer reviewed, 2018)Different types of crash components are extensively used by the automotive industry to absorb energy during car accidents. Such components typically consist of sandwich structures with thin metal or composite plates as ... -
Radiation therapy and training effects on the mechanical performance of bone
(Master thesis, 2021)Med stadig stigende forventet levealder oppstår nye aldersrelaterte utfordringer. Eksponering for både osteoporotiske brudd og kreft øker med alder, og flere tilfeller oppdages siden ny teknologi for medisinsk undersøkelse ... -
Railway bridge damage detection using vehicle-based inertial measurements and apparent profile
(Journal article; Peer reviewed, 2017)The presence of damage in a railway bridge alters its stiffness and consequently, its static and dynamic response to loading. The dynamic response of a railway bridge to loading produces a dynamic response in the passing ... -
Railway catenary tension force monitoring via the analysis of wave propagation in cables
(Peer reviewed; Journal article, 2020)The tensioning forces applied to the contact wire in a railway catenary system influence the performance of the line. In this paper, a method to monitor the status of such tensioning forces is proposed based on the dependency ... -
Railway track loss-of-stiffness detection using bogie filtered displacement data measured on a passing train
(Peer reviewed; Journal article, 2021)This paper presents an innovative numerical framework for railway track monitoring using acceleration measurements from sensors installed on a passenger train. A numerical model including a 10 degrees of freedom train ... -
Raman antenna effect from exciton–phonon coupling in organic semiconducting nanobelts
(Journal article; Peer reviewed, 2017)The highly anisotropic interactions in organic semiconductors together with the soft character of organic materials lead to strong coupling between nuclear vibrations and exciton dynamics, which potentially results in ... -
Ramming av stålrørspeler med bergspisser mot fjell: Forsøk og numeriske analyser
(Master thesis, 2010)Det er i denne masteroppgaven sett på oppførselen til stålrørspeler med påmonterte pelspisser underramming mot fjell. Bakgrunnen for oppgaven er et FoU-prosjekt i regi av Statens Vegvesen igangsatt for å øke kunnskapen ... -
Rate dependent fracture of monolithic and laminated glass: Experiments and simulations
(Peer reviewed; Journal article, 2020)Glass is a brittle material known to possess large scatter in its fracture strength, which is caused by the existence of microscopic surface flaws. Fracture in glass generally originates from stress concentrations around ... -
Rate-dependent mechanical behaviour of semilunar valves under biaxial deformation: From quasi-static to physiological loading rates
(Peer reviewed; Journal article, 2020)In this study we investigate the rate-dependency of the mechanical behaviour of semilunar heart valves under biaxial deformation, from quasi-static to physiological loading rates. This work extends and complements our ... -
Reaction mechanisms of wood ash for use as a partial cement replacement
(Peer reviewed; Journal article, 2021)An increase in the produced amounts of wood ashes (WAs) is seen worldwide. In this study, the potential use of two representative WAs as a partial cement replacement is investigated. The WAs originate from combustion of ... -
Reactivity tests for supplementary cementitious materials: RILEM TC 267-TRM phase 1
(Journal article; Peer reviewed, 2018)A primary aim of RILEM TC 267-TRM: “Tests for Reactivity of Supplementary Cementitious Materials (SCMs)” is to compare and evaluate the performance of conventional and novel SCM reactivity test methods across a wide range ...