Recent Submissions

  • Nye datakilder i evaluering av store statlige investeringer - et potensiale for Big data? 

    Bull-Berg, Heidi; Olsson, Nils (Research report, 2014)
  • Local strain energy density for the fracture assessment of polyurethane specimens weakened by notches of different shape 

    Peron, Mirco; Razavi, Seyed Mohammed Javad; Berto, Filippo; Torgersen, Jan; Marsavina, L (Journal article; Peer reviewed, 2017)
    Recent studies on local stress fields in proximity of crack and notch tips have shown that Strain Energy Density (SED), averaged in a circular control volume surrounding the point of stress singularities, represents a ...
  • Formation of Built-Up Layer on the Tool in Turning Operation of Magnesium Alloys 

    Tomac, Nikola; Sørby, Knut; Doboviček, Sandro (Journal article; Peer reviewed, 2018)
    The present work highlights some factors which affect formation of a protective built-up layer (BUL) on the rake face of the cutting tool when cutting magnesium alloys. This work suggests that BUL can positively affect ...
  • Fracture assessment of PEEK under static loading by means of the local strain energy density 

    Peron, Mirco; Javad Razavi, Seyed Mohammed; Torgersen, Jan; Berto, Filippo (Journal article; Peer reviewed, 2017)
    Polyetheretherketone (PEEK) has gained interest in many industrial applications due to its high strength-to-weight ratio, excellent heat tolerance and high corrosion resistance. Stress concentrators such as notches and ...
  • Cascading Norwegian co-streams for bioeconomic transition 

    Egelyng, H; Romsdal, Anita; Hansen, H.O.; Slizyte, Rasa; Carvajal, Ana Karina; Jouvenot, Laura; Hebrok, Marie; Honkapää, Kaisu; Wold, Jens Petter; Seljåsen, Randi; Aursand, Marit (Journal article; Peer reviewed, 2017)
    A circular bioeconomy has become a global aspiration for governments in Europe and around the globe. This article pursues research questions concerning concrete innovations aiming to create bioeconomic transition options ...
  • Risk of collision between service vessels and offshore wind turbines 

    Dai, Lijuan; Ehlers, Sören; Rausand, Marvin; Utne, Ingrid Bouwer (Journal article; Peer reviewed, 2013)
    Offshore wind farms are growing in size and are situated farther and farther away from shore. The demand for service visits to transfer personnel and equipment to the wind turbines is increasing, and safe operation of the ...
  • Fatigue crack propagation prediction of a pressure vessel mild steel based on a strain energy density model 

    Huffman, PJ; Ferreira, J; Correia, JAFO; De Jesus, AMP; Lesiuk, G; Berto, Filippo; Fernandez-Canteli, A; Glinka, G (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 ...
  • Notch stress intensity factors under mixed mode loadings: An overview of recent advanced methods for rapid calculation 

    Peron, Mirco; Razavi, Seyed Mohammed Javad; Berto, Filippo; Torgersen, Jan (Journal article; Peer reviewed, 2017)
    Recently some methods for the rapid calculation of notch stress intensity factors (NSIFs) have been developed and three of them are compared in this work. First, the criteria proposed by Lazzarin et al. and Treifi et al. ...
  • Fracture assessment of magnetostrictive materials 

    Peron, Mirco; Razavi, Seyed Mohammed Javad; Berto, Filippo; Torgersen, Jan; Colussi, M (Journal article; Peer reviewed, 2017)
    Giant magnetostrictive materials are gaining interest in the field of smart material, especially the commercially known Terfenol-D, that is an alloy made out of iron, terbium and dysprosium (Tb0.3Dy0.7Fe1.9). Since these ...
  • Local strain energy density for the fatigue assessment of hot dip galvanized welded joints: Some recent outcomes 

    Peron, Mirco; Razavi, Seyed Mohammed Javad; Berto, Filippo; Torgersen, Jan; Mutignani, F (Journal article; Peer reviewed, 2017)
    Since in literature only data about the effect of the hot-dip galvanizing coating on fatigue behavior of unnotched specimens are available, whereas very few for notched components and none for welded joints, the aim of ...
  • Mode II brittle fracture: Recent developments 

    Campagnolo, A; Razavi, Seyed Mohammed Javad; Peron, Mirco; Torgersen, Jan; Berto, Filippo (Journal article; Peer reviewed, 2017)
    Fracture behaviour of V-notched specimens is assessed using two energy based criteria namely the averaged strain energy density (SED) and Finite Fracture Mechanics (FFM). Two different formulations of FFM criterion are ...
  • The fatigue behavior of V-notches in presence of residual stresses: Recent developments and future outcomes 

    Ferro, P; Peron, Mirco; Razavi, Seyed Mohammed Javad; Berto, Filippo; Torgersen, Jan (Journal article; Peer reviewed, 2017)
    Residual stresses, arising from welding processes or nonhomogeneous plastic deformations, broadly influence the high cycle fatigue behavior of mechanical components. The presence of V-notches leads to singular residual ...
  • Failure assessment of steel/CFRP double strap joints 

    Majidi, Hamid Reza; Razavi, Seyed Mohammed Javad; Berto, Filippo (Journal article; Peer reviewed, 2017)
    In the current study, the failure behavior of retrofitted steel structures was studied experimentally and theoretically with steel/carbon fiber reinforced polymer (CFRP) double strap joints (DSJs) under quasi-static tensile ...
  • Mechanical characterization of composite coatings formed by reactive detonation spraying of titanium 

    Panin, Sergey; Vlasov, Ilya; Dudina, Dina; Ulianitsky, Vladimir; Stankevich, Roman; Batraev, Igor; Berto, Filippo (Journal article; Peer reviewed, 2017)
    The structure and mechanical properties of the coatings formed by reactive detonation spraying of titanium in a wide range of spraying conditions were studied. The variable deposition parameters were the nature of the ...
  • Fatigue Assessment of Ti–6Al–4V Circular Notched Specimens Produced by Selective Laser Melting 

    Razavi, Seyed Mohammed Javad; Ferro, Paolo; Berto, Filippo (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 ...
  • Automated assembly using 3D and 2D cameras 

    Kleppe, Adam Leon; Bjørkedal, Asgeir; Larsen, Kristoffer; Egeland, Olav (Journal article; Peer reviewed, 2017)
    D and 3D computer vision systems are frequently being used in automated production to detect and determine the position of objects. Accuracy is important in the production industry, and computer vision systems require ...
  • A framework for production rescheduling in sociotechnical manufacturing environments 

    Arica, Emrah; Haskins, Cecilia; Strandhagen, Jan Ola (Journal article; Peer reviewed, 2016)
    No plan survives contact with reality. Despite the rich research base regarding handling uncertainty in production planning and control systems, there is an intellectual gap between theory and practice with regard to ...
  • An Improved Hybrid Algorithm Based on Biogeography/Complex and Metropolis for Many-Objective Optimization 

    Wang, Chen; Wang, Yi; Wang, Kesheng; Dong, Yao; Yang, Yang (Journal article; Peer reviewed, 2017)
    It is extremely important to maintain balance between convergence and diversity for many-objective evolutionary algorithms. Usually, original BBO algorithm can guarantee convergence to the optimal solution given enough ...
  • Long-Term Properties of Interlaminar Shear Strength of Composite Laminates 

    Monsås, Anna Birgitte (Master thesis, 2018)
    Components made of fiber reinforced polymers (FRP) are frequently used in environments with fluctuating temperatures and moisture levels. These environmental factors lead to a degradation of the FRP in the long term. The ...
  • Notched graphite under multiaxial loading 

    Razavi, Seyed Mohammed Javad; Peron, Mirco; Torgersen, Jan; Berto, Filippo (Journal article; Peer reviewed, 2017)
    Cylindrical specimens made of polycrystalline graphite and weakened by circumferential V-notches under mixed mode I/III loading were studied in this research. Different geometries of V-notches varying the notch opening ...

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