Browsing NTNU Open by Title
Now showing items 34321-34340 of 100783
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Fatigue assessment methods for welded structures and their application to an aluminium T-joint
(Doktoravhandlinger ved NTNU, 1503-8181; 2006:129, Doctoral thesis, 2006)Following a short introduction, the state-of-the-art fatigue life assessment methods based on the nominal stress, the structural hot spot stress and the effective notch stress, as well as the crack propagation analysis are ... -
Fatigue assessment of a generic steel bridge - A comparison of NS-EN 1993-1-9 and DNVGL-RP-C203
(Master thesis, 2021)Denne masteroppgaven har sammenlignet utmattingsberegning i sveiste detaljer i en generisk bro ved bruk av standardene NS-EN 1993-1-9 og DNVGL-RP-C203. Broen består av et ortotropisk dekke og fagverk på begge sidene. Det ... -
Fatigue assessment of a generic steel bridge - A comparison of NS-EN 1993-1-9 and DNVGL-RP-C203
(Master thesis, 2021)Denne masteroppgaven har sammenlignet utmattingsberegning i sveiste detaljer i en generisk bro ved bruk av standardene NS-EN 1993-1-9 og DNVGL-RP-C203. Broen består av et ortotropisk dekke og fagverk på begge sidene. Det ... -
Fatigue Assessment of Aluminium Welded Box-stiffener Joints in Ships
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:88, Doctoral thesis, 2008)One of the trends in ship building is the building of larger and faster ships. However, increasing demand for speed has forced the ship designers to search for alternative materials to reduce the weight of the ship without ... -
Fatigue assessment of as‐built and heat‐treated Inconel 718 specimens produced by additive manufacturing including notch effects
(Journal article; Peer reviewed, 2020)The fatigue behaviour of notched and unnotched specimens produced by additively manufactured Inconel 718 were analysed in the as‐built and heat‐treated conditions. The surfaces display high roughness and defects acting as ... -
Fatigue Assessment of AZ31 Magnesium Alloy Weldments - Application of a Local Energy-Based Method
(Master thesis, 2018)Traditional stress-based fatigue criterions are highly dependent of geometry and loading mode and are often based on idealized geometries and loading conditions. These fatigue criteria are seldom applicable in general ... -
Fatigue Assessment of Components Subjected to Non-Proportional Stress Histories
(Master thesis, 2013)The fatigue assessment of components subjected to complex loading histories is a challenging topic. Several criteria intended for use under multiaxial stress-states and non-proportional loading have been proposed by many ... -
Fatigue Assessment of Components Subjected to Non-Proportional Stress Histories
(Master thesis, 2013)The fatigue assessment of components subjected to complex loading histories is a challenging topic. Several criteria intended for use under multiaxial stress-states and non-proportional loading have been proposed by many ... -
Fatigue Assessment of Inconel 625 Produced by Directed Energy Deposition from Miniaturized Specimens
(Peer reviewed; Journal article, 2022)In recent years, the industrial application of Inconel 625 has grown significantly. This material is a nickel-base alloy, which is well known for its chemical resistance and mechanical properties, especially in high-temperature ... -
Fatigue Assessment of Mooring Chain Considering the Effects Of Mean Load and Corrosion
(Peer reviewed; Journal article, 2021)Results from full scale fatigue tests of offshore mooring chains performed in recent years have revealed considerable influence of both mean load and corrosion condition on the fatigue capacity. It has been shown that a ... -
Fatigue Assessment of Notches and Cracks in Ductile Cast Iron
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:224, Doctoral thesis, 2011)The steadily increasing use of ductile cast iron and the necessity for building larger cast components present new challenges to the designers. In despite of large cast components are designed adhered to standards, unexpected ... -
Fatigue Assessment of Offshore Wind Turbine Support Structures with the Frequency Domain Method
(Master thesis, 2015)Offshore wind energy has shown great potential and can be a great contributor when it comes to solving some of the climate challenges that the world faces today. However, both design and operational cost has been a limiting ... -
Fatigue Assessment of Offshore Wind Turbines Using Measurements of Individual Turbines and Machine Learning Techniques
(Master thesis, 2019)Tretthet er ofte en styrende designfaktor for havvindmøller. Siden utformingen av offshore vindturbiner inkluderer konservatisme, kan den faktiske akkumulerte tretthetsskaden være lavere enn hva turbinen er beregnet på. I ... -
Fatigue assessment of semi-circular notched specimens produced by Laser Engineered Net Shaping method
(Journal article; Peer reviewed, 2018)As a primary failure mechanism, fatigue failure of additively manufactured metallic parts has attracted considerable attention in both aerospace and biomedical applications. According to some specific design requirements, ... -
Fatigue assessment of steel load-carrying cruciform welded joints by means of local approaches
(Journal article, 2018)In this paper, local approaches are employed to analyse stress distributions, local fatigue indicators of weld toe, and weld root in load‐carrying cruciform welded joints (LCWJs). An extension of previous available equations ... -
Fatigue assessment of steel rollers by means of the local energy
(Journal article; Peer reviewed, 2017)This paper aims to analyses the fatigue behavior of steel rollers using the average strain energy density (SED) criterion. Considering the variability of the V-notch opening angle, a simple scalar quantity, i.e. the value ... -
Fatigue Assessment of Threaded Riser Connections
(Master thesis, 2014)Threaded connections as found in applications like rigid riser, drillstrings, and workover riser are manufactured with sharp notches. Subjected to cyclic loading, those notches lead to high stress concentrations, which ... -
Fatigue Assessment of Ti–6Al–4V Circular Notched Specimens Produced by Selective Laser Melting
(Journal article; Peer reviewed, 2017)Additive manufacturing (AM) offers the potential to economically produce customized components with complex geometries in a shorter design-to-manufacture cycle. However, the basic understanding of the fatigue behavior of ... -
Fatigue Assessment of Welded Components through Local Approaches
(Doctoral theses at NTNU;2021:309, Doctoral thesis, 2021)Fatigue is a phenomenon having local nature; it is obvious that an accurate fatigue assessment of a component must take into account the local parameters as close as possible to the reality. Fatigue in welded components ... -
Fatigue assessment of welded joints by means of the strain energy density method: Numerical predictions and comparison with eurocode 3
(Journal article; Peer reviewed, 2019)The main aim of the present work is to investigate the effects of different parameters on the fatigue strength of four different welded details through an energetic approach based on the Strain Energy Density failure ...