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Blar i NTNU Open på forfatter "Berto, Filippo"

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    • Assessment of mixed mode fatigue crack growth under biaxial loading using an iterative technique 

      Razavi, Seyed Mohammad Javad; Ayatollahi, Majid reza; Berto, Filippo (Peer reviewed; Journal article, 2020)
      Crack growth is investigated numerically in a cruciform specimen with an inclined center crack subjected to biaxial fatigue loading. The mixed-mode fatigue crack growth was examined using a parametric study both on the ...
    • Assessment of tensile and fatigue behavior of PEEK specimens in a physiologically relevant environment 

      Peron, Mirco; Torgersen, Jan; Berto, Filippo (Journal article; Peer reviewed, 2019)
      In the last decades the necessity of implant devices is continuously increasing. The researchers have thus focused their attentions on the development of new biocompatible materials, in particular polymers. Among them, ...
    • Assessment of the Mechanical Integrity of a 2 mm AA6060-T6 Butt Weld Produced Using the Hybrid Metal Extrusion & Bonding (HYB) Process – Part I: Bend Test Results 

      Sandnes, Lise; Romere, Luca; Berto, Filippo; Welo, Torgeir; Grong, Øystein (Journal article; Peer reviewed, 2019)
      The present investigation is concerned with butt welding of 2 mm thin AA6060-T6 profiles at room temperature (RT), using the HYB process and AA6082-T4 as filler material. In the as-welded condition, the 1000 mm long butt ...
    • Assessment of the Mechanical Integrity of a 2 mm AA6060-T6 Butt Weld Produced Using the Hybrid Metal Extrusion & Bonding (HYB) Process – Part II: Tensile Test Results 

      Sandnes, Lise; Romere, Luca; Grong, Øystein; Berto, Filippo; Welo, Torgeir (Journal article; Peer reviewed, 2019)
      The present investigation is concerned with solid state butt welding of 2 mm thin AA6060-T6 profiles at room temperature (RT), using the HYB process and AA6082-T4 as filler material (FM). In Part II of this investigation ...
    • Averaged strain energy density criterion for rupture assessment of cracked rubbers: A novel method for determination of critical SED 

      Heydari-Meybodi, Mahdi; Ayatollahi, Majid Reza; Berto, Filippo (Journal article; Peer reviewed, 2018)
      In the present study, the application of averaged strain energy density (ASED) criterion has been extended to hyperelastic materials. Because of the material and geometry nonlinearities, commonly known for rubber-like ...
    • Averaged strain energy density estimated rapidly from the nodal stresses by FEM for cracks under mixed mode loadings including the T-stress contribution 

      Meneghetti, Giovanni; Campagnolo, Alberto; Berto, Filippo (Journal article; Peer reviewed, 2019)
      The present contribution reviews a recently proposed method to rapidly estimate the averaged SED at the tip of short as well as long cracks under in-plane I+II and long cracks under out-of-plane I+III mixed mode loadings. ...
    • Averaged strain energy density to assess mixed mode I/III fracture of U-notched GPPS samples 

      Saboori, Behnam; Torabi, Ali reza; Berto, Filippo; Razavi, Seyed Mohammad Javad (Journal article, 2018)
      In the present contribution, fracture resistance of U-notched GPPS members under mixed mode I/III loading conditions is assessed by using the Averaged Strain Energy Density (ASED) criterion. This criterion has been founded ...
    • Based on energy approach for the fatigue life evaluation of micrometric-sized single-crystal silicon notched specimens 

      Bressan, Stefano; Razavi, Seyed Mohammad Javad; Berto, Filippo (Journal article; Peer reviewed, 2018)
      Fatigue behavior of single-crystal silicon notched specimens have been analyzed employing a strain energy density parameter. The micrometric specimens obtained from {1 0 0} and {1 1 0} wafers and characterized by five ...
    • Calibration Method for monitoring hygro-mechanical reactions of coated and uncoated pine and oak wood by Acoustic Emission Non-Destructive Testing 

      Bertolin, Chiara; De Ferri, Lavinia; Berto, Filippo (Peer reviewed; Journal article, 2020)
      The main issue of wood is its sensitivity to Relative Humidity (RH) variations, affecting its dimensional stability, and thus leading to crack formations and propagations. In situ structural health monitoring campaigns ...
    • Calibration of the potential drop method by means of electric FE analyses and experimental validation for a range of crack shapes 

      Campagnolo, Alberto; Meneghetti, Giovanni; Berto, Filippo; Tanaka, Keisuke Ke (Journal article, 2018)
      In experimental fatigue tests, it may be necessary to identify the onset of crack initiation, which is often defined at a given (short) crack length. Different experimental techniques are available to estimate the initiated ...
    • Characterization of AA6082-T6 Aluminium alloy and S355 steel welding achieved with the hybrid metal extrusion & bonding (HYB) process. 

      Manfrotto, Matteo (Master thesis, 2018)
      The HYB is an innovative cold welding process and this work try to show the good results in a dissimilar joining obtained with the process. The tests carried out are: HV hardness test for showing the heat affected zone; ...
    • Comparative Study of the Uniaxial Cyclic Behaviour of Carbide-Bearing and Carbide-Free Bainitic Steels 

      Branco, R; Berto, Filippo; Zhang, F; Long, X; Costa, JD (Journal article; Peer reviewed, 2018)
      Bainitic steels play an important role in the modern automotive and rail industries because of their balanced properties. Understanding the relationship between the bainitic microstructure features and the fatigue performance ...
    • Comparison of Static Failure Criteria of Additively Manufactured Inconel 718 Analyzed by means of Strain Energy Density 

      Gabrielsen, Gard Jonas Moen (Master thesis, 2019)
      En glatt prøvestav og prøvestav med butt V-kjerv av Inconel 718 (IN718) ble additiv produsert (AM) ved hjelp av selektiv lasersmelting (SLM) uten etterbehandling. Senere ble de statisk strekkprøvet. Styrken til prøvestaven ...
    • Computational Advantages of the Local Strain Energy Density for Fracture and Fatigue Design 

      Berto, Filippo; Sandnes, Lise (Journal article; Peer reviewed, 2018)
      This field of brittle fracture has engaged researchers from various fields of engineering from the early days until today. There are nowadays different approaches for the fracture and fatigue design. A high potential has ...
    • Core‐shell nanofibers for developing self‐healing materials: Recent progress and future directions 

      Esmaeely Neisiany, R; Nouri khorasani, Saied; Kong Yoong Lee, Jeremy; Razavi, Seyed Mohammad Javad; Enayati, MS; Naeimirad, M; Berto, Filippo; Ramakrishna, Seeram (Peer reviewed; Journal article, 2019)
      The knowledge of self‐healing was developed to ensure more durable and reliable engineering materials. Healing agent encapsulation has shown to be one of the most promising approaches in self‐healing technology. The healing ...
    • Crack initiation life in notched Ti-6Al-4V titanium bars under uniaxial and multiaxial fatigue: Synthesis based on the averaged strain energy density approach 

      Meneghetti, Giovanni; Campagnolo, Alberto; Berto, Filippo; Tanaka, Keisuke (Journal article; Peer reviewed, 2017)
      The fatigue behaviour of circumferentially notched specimens made of titanium alloy, Ti-6Al-4V, has been analysed. To investigate the notch effect on the fatigue strength, pure bending, pure torsion and multiaxial ...
    • Crack propagation in a brittle DCB specimen assessed by means of the Williams? power expansion 

      Malikova, Lucie; Razavi, Seyed Mohammad Javad; Berto, Filippo (Journal article; Peer reviewed, 2019)
      A double cantilever beam geometry has been chosen in order to investigate the importance of the higher-order terms of the Williams’ power expansion for the crack path estimation. The crack propagation has been tested ...
    • Cracked components under anti-plane loading: Recent outcomes and future developments 

      Berto, Filippo (Journal article; Peer reviewed, 2017)
      The existence of three-dimensional effects at cracks has been known for many years, but understanding has been limited, and for some situations still is. Understanding improved when the existence of corner point singularities ...
    • Cracking Behaviors of Rock-Like Specimens Containing Two Sets of Preexisting Cross Flaws under Uniaxial Compression 

      Zhou, XP; Li, LH; Berto, Filippo (Journal article; Peer reviewed, 2019)
      Cross flaws occur widely in rock masses and play a crucial role in the failure of rock engineering. This article first experimentally studies the cracking behaviors of rock-like specimens containing two sets of preexisting ...
    • Creep and high temperature fatigue performance of as buildselective laser melted Ti-based 6Al-4V titanium alloy 

      Viespoli, Luigi Mario; Bressan, Stefano; Itoh, Takamoto; Hiyoshi, Noritake; Prashanth, Konda Gokuldoss; Berto, Filippo (Peer reviewed; Journal article, 2020)
      The present work focuses on the room and high temperature low-cycle fatigue and creep testing of Ti-6Al-4V manufactured by selective laser melting (SLM) or laser-based powder bed fusion process (LBPF). The fatigue specimens ...

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