Blar i UiS Brage på forfatter "Pavlou, Dimitrios"
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Bending capacity of multi-layered FRP pipelines during offshore installation
Pavlou, Dimitrios (Peer reviewed; Journal article, 2021)The Fiber Reinforced Polymeric (FRP) pipelines have higher strength than steel, and excellent fatigue behavior and corrosion resistance. Because of their superior performance in mechanical loads and corrosive environment, ... -
Bending-induced local buckling during offshore installation of multi-layered FRP pipelines
Pavlou, Dimitrios; Adasooriya, Mudiyan Nirosha Damayanthi (Peer reviewed; Journal article, 2021)In the last two decades FRP pipelines have attracted the attention of the oil industry because of their high strength, excellent fatigue performance and low specific weight. On the other hand, the final cost of installation ... -
Cost Improvement of Seal Retainer
Zurcher, Erik Årdal (Masteroppgave/UIS-TN-IMBM/2020;, Master thesis, 2020-06)The objectives of the thesis are to optimize the tip angle of the seal retainers and to determine cheaper materials that are appropriate for the application of the tool. Seal retainers are used to retain seals on valve ... -
Design of loading devices for mixed-mode fatigue crack propagation testing
Rydland, Jonas Olsvik (Masteroppgave/UIS-TN-IMBM/2018;, Master thesis, 2018-06)Traditional fatigue crack propagation tests are performed in mode I, i.e. with a cyclic load applied perpendicularly to the initial crack. However, fatigue cracks in real components are often subjected to mixed-mode loading. ... -
Design of the steel frame of a racing car
Genthner, Lars Andreas Flesjå; Mikkelsen, Sondre (Bachelor thesis, 2022)Denne oppgaven omhandler modellering og simulering av en stålramme til en racerbil. Det er gjennomført en litteraturstudie om det grunnleggende innen racerbildesign, med særskilt fokus på rammedesign. Det har blitt brukt ... -
Design of the steel frame of a racing car
Genthner, Lars Andreas Flesjå; Mikkelsen, Sondre (Bachelor thesis, 2022)Denne oppgaven omhandler modellering og simulering av en stålramme til en racerbil. Det er gjennomført en litteraturstudie om det grunnleggende innen racerbildesign, med særskilt fokus på rammedesign. Det har blitt brukt ... -
A deterministic algorithm for nonlinear, fatigue-based structural health monitoring
Pavlou, Dimitrios (Peer reviewed; Journal article, 2021-10)The irregularity of peak and valley stress values of loading histories is the main impediment for accurate fatigue-based structural health monitoring. Since the available fatigue material data (e.g., S-N curves) have been ... -
Dimensjonering av et industribygg ved bruk av elementmetoden
Eiane, Edvard; Byberg, Erling (Bachelor thesis, 2022)Oppgaven handler om å dimensjonere et industribygg. Dette innebærer å finne dimensjonene på bjelker, søyler, fagverk etc. Dette er blitt utført ved hjelp av programvare som er basert på elementmetoden. Vi har utført ... -
Dimensjonering av et industribygg ved bruk av elementmetoden
Eiane, Edvard; Byberg, Erling (Bachelor thesis, 2022)Oppgaven handler om å dimensjonere et industribygg. Dette innebærer å finne dimensjonene på bjelker, søyler, fagverk etc. Dette er blitt utført ved hjelp av programvare som er basert på elementmetoden. Vi har utført ... -
Environment-assisted fatigue of steel bridges: A conceptual framework for life assessment
Sandviknes, Julie Sofie Stav; Adasooriya, Mudiyan Nirosha Damayanthi; Pavlou, Dimitrios; Hemmingsen, Tor (Peer reviewed; Journal article, 2021)This paper presents a framework based on a recently proposed fatigue strength curve of corroded steel to assess the life of an existing steel bridge exposed to environment-assisted fatigue. Environment-assisted cracking ... -
Evaluation of a nonlinear cumulative creep damage model for design applications
Nikolaisen, Amanda Joela Rachel (Masteroppgave/UIS-TN-IKM/2017;, Master thesis, 2017-06-15)Predicting creep damage and remaining life of an engineering design is a complex task. There are many types of creep material models and they provide significantly different predictions. Furthermore, the necessary material ... -
Fatigue design challenges: Recent linear and nonlinear models
Pavlou, Dimitrios (Peer reviewed; Journal article, 2019)Reliable fatigue design rules affect the proactive identification of safety parameters in engineering structures. Numerous fatigue crack initiation and propagation models, linear and nonlinear, have been developed for ... -
Fatigue Strength Curve for Tubular Joints of Offshore Structures under Dynamic Loading
Siriwardane, Sudath C.; Adasooriya, Mudiyan Nirosha Damayanthi; Pavlou, Dimitrios (Journal article, 2021)Abstract Offshore structures are subjected to dynamic environmental loads (wave and wind loads). A stress-life fatigue strength curve is proposed for tubular joints which are in the splash zone area of offshore jacket ... -
Fatigue strength degradation of corroded structural details: A formula for S‐N curve
Adasooriya, Mudiyan Nirosha Damayanthi; Pavlou, Dimitrios; Hemmingsen, Tor (Peer reviewed; Journal article, 2019)A formula is proposed to predict fatigue strength of corroded members and joints of steel structures. The concept of the formula is first studied from recently identified mechanism of corrosion fatigue. Hence, the corresponding ... -
Fatigue strength degradation of metals in corrosive environments
Adasooriya, Mudiyan Nirosha Damayanthi; Hemmingsen, Tor; Pavlou, Dimitrios (Journal article; Peer reviewed, 2017)Structures exposed to aggressive environmental conditions are often subjected to time-dependent loss of coating and loss of material due to corrosion; this causes reduction in the cross-sectional properties of the members, ... -
Flexural dynamic behavior of submerged cylindrical structures under wave loads
Giotis, Theofanis; Pavlou, Dimitrios; Belibassakis, Konstadinos A. (Peer reviewed; Journal article, 2019-11)Abstract. An analytical solution for the dynamic response of submerged slender circular cylindrical structure subjected to linear wave loads is presented. A double Laplace transform with respect to temporal and spatial ... -
Flexural dynamic response of monopile foundations under linear wave loads
Giotis, Theofanis; Pavlou, Dimitrios (Peer reviewed; Journal article, 2020-03)An analytical solution for the dynamic response of submerged slender circular cylindrical structures subjected to linear wave loads is presented. A double Laplace transform with respect to temporal and spatial variables ... -
Friksjonsmodellering av tension hjul i Tether Management System
Løyning, Amund; Johnsen, Joel; Andresen, Henning Granne (Bachelor thesis, 2021)I denne oppgaven undersøkes problemer IKM har opplevd med sitt nåværende Tether Management System(TMS). Dette innebærer å se på de nåværende løsningene, finne passende friksjon-modeller ved analyse og diskutere materialvalg ... -
Friksjonsmodellering av Tensionhjul i Tether Management System
Johnsen, Joel; Andresen, Henning Granne; Løyning, Amund (Bachelor thesis, 2021)I denne oppgaven undersøkes problemer IKM har opplevd med sitt nåværende Tether Management System(TMS). Dette innebærer å se på de nåværende løsningene, finne passende friksjon-modeller ved analyse og diskutere materialvalg ... -
Friksjonsmodellering av tensionhjul i Tether Managment System
Andresen, Henning Granne; Løyning, Amund; Johnsen, Joel (Bachelor thesis, 2021)I denne oppgaven undersøkes problemer IKM har opplevd med sitt nåværende Tether Management System(TMS). Dette innebærer å se på de nåværende løsningene, finne passende friksjon-modeller ved analyse og diskutere materialvalg ...