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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 ... -
Fatigue Behavior of Metallic Components Obtained by Topology Optimization for Additive Manufacturing
(Peer reviewed; Journal article, 2021)The main goal of the present research is to propose an integrated methodology to address the fatigue performance of topology optimized components, produced by additive manufacturing. The main steps of the component design ... -
Fatigue behavior of porous Ti-6Al-4V made by laser-engineered net shaping
(Journal article; Peer reviewed, 2018)The fatigue behavior and fracture mechanisms of additively manufactured Ti-6Al-4V specimens are investigated in this study. Three sets of testing samples were fabricated for the assessment of fatigue life. The first batch ... -
Fatigue Crack Growth behavior of Additively Manufactured 17-4 PH Stainless Steel: Effects of thickness and surface condition
(Master thesis, 2023)Additive Manufacturing (AM) revolutionized the field of manufacturing by enabling the production of complex geometries with greater design freedom. However, the use of these components for structural applications depends ... -
Fatigue crack growth behavior of Ni-Cr-Mo-V steel welded joints considering strength mismatch effect
(Peer reviewed; Journal article, 2021)High strength steel welded joints are usually fabricated by heterogeneous weld metal for reducing the negative impacts of microstructural characteristics and defects on mechanical properties, such as hydrogen embrittlement ... -
Fatigue crack growth behavior of SLM 316L stainless steel
(Master thesis, 2017)Additive manufacturing (AM) has the ability to change the way we design and manufacture products. The technology enables the manufacture of complex parts in one process by adding layer-upon-layer of material, with practically ... -
Fatigue crack propagation prediction of a pressure vessel mild steel based on a strain energy density model
(Journal article; Peer reviewed, 2017)Fatigue crack growth (FCG) rates have traditionally been formulated from fracture mechanics, whereas fatigue crack initiation has been empirically described using stress-life or strain-life methods. More recently, there ... -
Fatigue design for metallic components produced by additive manufacturing
(Doctoral theses at NTNU;2021:25, Doctoral thesis, 2021)Additive manufacturing is a fast-rising manufacturing that brings new possibilities in terms of what has previously been possible in manufacturing. Additive manufacturing is a computer-controlled process where the material ... -
Fatigue Design of Cables for Energy Transport
(Master thesis, 2020)Under vann brukes strømkabler til å distribuere strøm til offshoreinstallasjoner. Strømkablene består av innvendige strømledere som er beskyttet av flere lag med materiale. Ekstruderte blyhylser fungerer som et beskyttende ... -
Fatigue Design of Hydraulic Turbine Runners
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:19, Doctoral thesis, 2005)Turbine runners experience start-stop cycles and vibration cycles. Cracks initiated from service or manufacturing defects and propagated by start-stop cycles become critical when the stress intensity range due to vibrational ... -
Fatigue evaluation of notched Al-Si-10Mg produced by SLM
(Master thesis, 2019)I dette arbeidet undersøkes hakkeffekten av additivt produsert Al-Si-10Mg. En forståelse av teorien er utviklet gjennom en litteraturvurdering med fokus på produksjonsprosessen, legeringsegenskaper, tretthet og varmebehandling. ... -
Fatigue investigation of complex weldments by the means of the local strain energy density approach
(Journal article; Peer reviewed, 2018)The paper investigates the use of an energetic approach based on the strain energy density failure criteria to predict the fatigue life of welded joints in aluminum alloy. The cited criterion has already been proved valid ... -
Fatigue life assessment for a welded detail: advantages of a local energetic approach and experimental validation
(Journal article; Peer reviewed, 2018)In modern civil buildings, as well as in mechanical and naval constructions, welding is a widely diffused technological process. The fatigue assessment, as design or verification procedure, of a welded joint to evaluate ... -
Fatigue life assessment of notched round bars under multiaxial loading based on the total strain energy density approach
(Journal article, 2018)The main purpose of this paper is the fatigue assessment in lateral U-shaped notched round bars under bending-torsion loading. Despite its importance in the context of mechanical design, very little work has been done in ... -
Fatigue Life Prediction of Welded Joints for Industrial Applications - Overview on the regulations and extension to Fracture Mechanics
(Master thesis, 2017)1) An overview on the fatigue assessment procedures for welds 3 1.1) Basic principles 3 1.2) Determining the stresses and the stress intensity factors 5 1.2.1) Nominal Stress approach 6 1.2.2) Structural Hot Spot Stress ... -
Fatigue loads in a Francis turbine runner
(Master thesis, 2019)Utvidelsen av fornybare energikilder i det europeiske energimarkedet fører til en økende etterspørsel etter regulerbare energikilder som kan stabilisere nettfrekvensen. Vannkraft kan fungere som en regulerbar energikilde, ... -
Fatigue of additively manufactured 316L stainless steel: The influence of porosity and surface roughness
(Journal article; Peer reviewed, 2019)The fatigue behaviour of additively manufactured (AM) 316L stainless steel is investigated with the main emphasis on internal porosity and surface roughness. A transition between two cases of failure are found: failure ... -
Fatigue of Smart Composite Metal Joints
(Master thesis, 2013)Adhesive joints are ideal for connecting dissimilar materials in optimized structures.Low weight and potential savings in manufacturing costs are major advantages relatedto such joints, but their use is currently limited ... -
Fatigue of V-notched ZK60 magnesium samples: X-ray damage evolution characterization and failure prediction
(Journal article, 2020)Magnesium and its alloys are very attractive lightweight materials and have a potential of applications in different industries. However, their applications as materials for load bearing components are hindered by the ...