Blar i Institutt for maskinteknikk og produksjon på tidsskrift "International Journal of Fatigue"
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A diagram for capturing and predicting failure locations in notch geometries produced by additive manufacturing
(Journal article; Peer reviewed, 2020)In a recent work by the authors Solberg and Berto (2019), as-built notch geometries of Inconel 718 produced by selective laser melting was investigated under fatigue loading. One of the findings was that fatigue did not ... -
Directional fatigue behaviour of maraging steel grade 300 produced by laser powder bed fusion
(Peer reviewed; Journal article, 2021)Surfaces of metals produced by additive manufacturing (AM) are known to be rough and populated with defects, this is, in particular, true for downward-facing (down-skin) surfaces. When dealing with the fatigue of as-built ... -
Dual roles of pearlite microstructure to interfere/facilitate gaseous hydrogen-assisted fatigue crack growth in plain carbon steels
(Peer reviewed; Journal article, 2021)Fatigue crack growth of two carbon steels with different pearlite volume fractions were studied in pressurized gaseous hydrogen environment. Notably, pearlite was found to mitigate hydrogen-assisted fatigue crack acceleration. ... -
Effect of Geometrical Irregularities on Fatigue of Lead Sheathing for Submarine High Voltage Power Cable Applications
(Peer reviewed; Journal article, 2021)High voltage subsea power cables are typically composed of several layers, including: a conductive core, a dielectric layer, a ductile metallic watertight barrier and a series of radial and axial armours and polymer layers. ... -
Effect of heat treatment on fatigue behavior of as-built notched Co-Cr-Mo parts produced by Selective Laser Melting
(Peer reviewed; Journal article, 2021)In this paper Cobalt-Chromium-Molybdenum (Co-Cr-Mo) specimens produced by Selective Laser Melting (SLM) for biomedical field were studied. In particular, fatigue tests were carried out comparing as-built condition with Hot ... -
Effect of the free surface on the fatigue crack front curvature at high stress asymmetry
(Journal article, 2019)The purpose of this paper is to investigate the effect of the vertex singularity on the fatigue crack front behaviour. Single edge notch bend specimens of steel EA4T and aluminium alloy 7075 of various thicknesses are ... -
Evaluation and comparison of critical plane criteria for multiaxial fatigue analysis of ductile and brittle materials
(Journal article; Peer reviewed, 2018)This paper conducts a comparative evaluation on typical critical plane criteria, including Fatemi-Socie, Wang-Brown, modified Smith-Watson-Topper (MSWT) and proposed modified generalized strain energy (MGSE) criteria for ... -
Experimental and numerical fretting fatigue using a new test fixture
(Peer reviewed; Journal article, 2020)A unique dovetail-based test fixture for fretting fatigue was designed and is demonstrated with a combined experimental and numerical campaign. Fretting fatigue damage is analysed and correlated with numerical analyses ... -
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 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 ... -
Immersed interlaminar fatigue of glass fiber epoxy composites using the I-beam method
(Journal article; Peer reviewed, 2019)Exposure to marine environment causes a degradation of the interlaminar shear performance of composites. This effect has been reported in several studies, but the mechanisms that lead to failure in composites subjected to ... -
Influence of deformation prior to ageing on fatigue behavior of extruded AA6082-T6 profiles
(Peer reviewed; Journal article, 2022)This paper investigates the effect of plastic deformation before artificial ageing on fatigue behavior of extruded AA6082-T6 profiles. As-received, T4-temper materials are pre-deformed at different strains and followed by ... -
Notch-Defect Interaction in Additively Manufactured Inconel 718
(Journal article; Peer reviewed, 2019)Powder bed fusion based additively manufactured components are known to have poor surface quality, especially when building downward facing surfaces. These surfaces can contain defects, from which fatigue cracks can be ... -
Novel method for in situ damage monitoring during ultrasonic fatigue testing by the advanced acoustic emission technique
(Peer reviewed; Journal article, 2021)Ultrasonic fatigue testing (USFT) is an effective method for the rapid characterisation of the high cycle fatigue properties of structural materials. However, the process of initiation and progression of fatigue damage ... -
On the fatigue properties of a third generation aluminium-steel butt weld made by hybrid metal extrusion & bonding (HYB)
(Peer reviewed; Journal article, 2021)The present investigation is concerned with the high-cycle axial fatigue behaviour of a third generation Al-steel butt weld made by hybrid metal extrusion & bonding (HYB). In this particular weld, metallurgical bonding is ... -
On the microstructure evolution during isothermal low cycle fatigue of β-annealed Ti-6242S titanium alloy: Internal damage mechanism, substructure development and early globularization
(Journal article, 2018)The present work deals with the room and high temperature microstructure evolutions of a near alpha titanium alloy (Ti-6242S) during isothermal low cycle fatigue. The initial fully lamellar microstructure has been purposefully ... -
Predicting fretting fatigue in engineering design
(Journal article; Peer reviewed, 2018)The progress in fretting fatigue understanding and predictability is reviewed, with engineering applications in mind. While industrial assessments often relies on simple empirical parameters, research in fretting fatigue ...