Blar i NTNU Open på forfatter "Solberg, Klas"
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A comparison between numerical and approximate methods for rapid calculation of NSIFs
Solberg, Klas; Lepore, Marcello; Berto, Filippo (Journal article; Peer reviewed, 2019)To more rapidly predicting the integrity of components weakened by sharp notches, notch stress intensity factors (NSIFs) are usually evaluated. Many methods have been proposed evaluating NSIFs, ranging from the stress ... -
A diagram for capturing and predicting failure locations in notch geometries produced by additive manufacturing
Solberg, Klas; Berto, Filippo (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 ... -
A numerical and analytical study of stress fields around defects occurring in additive manufactured components
Kjærstad, Vetle (Master thesis, 2020)Denne rapporten tar sikte på å vurdere påvirkningen av indre defekters plassering, orientering og geometri på utmattels ytelsen til 3D-printede komponenter ved å evaluere spenningsintensitets faktoren K. Grunnleggende ... -
Additive manufacturing of fine-grained and dislocation-populated CrMnFeCoNi high entropy alloy by laser engineered net shaping
Guan, Shuai; Wan, Di; Solberg, Klas; Berto, Filippo; Welo, Torgeir; Yue, Tai Man; Chan, K.C. (Journal article; Peer reviewed, 2019)The equiatomic CrMnFeCoNi high entropy alloy is additively manufactured by the laser engineered net shaping (LENSTM) process, and the solidification conditions, phase formation, as-deposited microstructures, and tensile ... -
Analysis of the Fatigue Behavior of 3D-Printed Maraging 300 Steel
Cuzovic, Matija (Master thesis, 2020)3D-printing er en fremstillings teknologi som kan fremstille strukturelle deler laget av metall gjennom lag for lag oppbygging. Målet med dette studiet er å undersøke data fra utmattelses tester med to Maraging 300 stål ... -
Collection of experimental data for multiaxial fatigue criteria verification
Morettini, Giulia; Braccesi, Claudio; Cianetti, Filippo; Razavi, Seyed Mohammad Javad; Solberg, Klas; Capponi, Lorenzo (Peer reviewed; Journal article, 2020)The present paper aims to propose data from incisive multiaxial fatigue experimental tests which results from the analysis of several works within current literature. Approximately 200 experimental datasets have been ... -
Directional fatigue behaviour of maraging steel grade 300 produced by laser powder bed fusion
Solberg, Klas; Hovig, Even Wilberg; Sørby, Knut; Berto, Filippo (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 ... -
Exploring the Modeling and Strength Prediction of Additively Manufactured Materials; Numerical and Analytical Approaches
Hamre, Tarjei (Master thesis, 2019)Additiv tilvirkning av metalliske materialer er et felt som opplever økende interesse både i forskningsmiljøet og industrien. Den økende interessen for denne produksjonsmetoden tilskrives dens evne til å produsere komplekse ... -
Fatigue assessment of as‐built and heat‐treated Inconel 718 specimens produced by additive manufacturing including notch effects
Solberg, Klas; Wan, Di; Berto, Filippo (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 design for metallic components produced by additive manufacturing
Solberg, Klas (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 of additively manufactured 316L stainless steel: The influence of porosity and surface roughness
Solberg, Klas; Guan, Shuai; Javad Razavi, Seyed Mohammad; Welo, Torgeir; Chan, Kang Cheung; Berto, Filippo (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 ... -
Formation of fully equiaxed grain microstructure in additively manufactured AlCoCrFeNiTi0.5 high entropy alloy
Guan, Shuai; Solberg, Klas; Wan, Di; Berto, Filippo; Welo, Torgeir; YUE, TM; Chan, KC (Journal article; Peer reviewed, 2019)In this work, the non-equiatomic high entropy alloy AlCoCrFeNiTi0.5 was additively manufactured via the laser engineered net shaping (LENS™) process. Contrary to the columnar grain microstructure commonly observed in ... -
An investigation of the anisotropic properties of heat-treated maraging steel grade 300 processed by laser powder bed fusion
Hovig, Even Wilberg; S. Azar, Amin; Solberg, Klas; Sørby, Knut (Peer reviewed; Journal article, 2021)In order to explore the possibilities enabled by laser beam powder bed fusion of metals (PBF-LB/M), reliable material models are necessary to optimize designs with respect to weight and stiffness. Due to the unique processing ... -
Notch-Defect Interaction in Additively Manufactured Inconel 718
Solberg, Klas; Berto, Filippo (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 ... -
Notched Fatigue Behaviour of Additively Manufactured Inconel 718
Solberg, Klas (Master thesis, 2018)Fatigue behavior for different notch geometries of additively manufactured Inconel 718 produced by Selective Laser Melting is investigated at room temperature. Additive manufacturing enables complex geometries in components ... -
What is going on with fatigue of additively manufactured metals?
Solberg, Klas; Berto, Filippo (Journal article; Peer reviewed, 2019)This brief communication gives an overview of fatigue behaviour and assessment of additively manufactured metals. The high cycle fatigue behaviour of as‐built and post‐processed additively manufactured superalloy 718, ...