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Browsing NTNU Open by Author "Ferro, Paolo"

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Now showing items 1-16 of 16

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    • A metallurgical and thermal analysis of Inconel 625 electron-beam welded joints 

      Romanin, Luca; Ferro, Paolo; Fabrizi, Alberto; Berto, Filippo (Journal article; Peer reviewed, 2019)
      Inconel 625 is a nickel-based superalloy that finds application in many industrial sectors thanks to its high strength, excellent fabricability, and outstanding corrosion resistance. It is characterized by a good weldability ...
    • A novel algorithm for crack path identification based on infrared images 

      Romanin, Luca; Vinogradov, Alexey; Berto, Filippo; Ferro, Paolo (Journal article; Peer reviewed, 2019)
      The present work aims at developing a new approach towards the analysis of the crack path through the access to the information from the infrared (IR) video imaging of the steady fatigue crack growth. We first test some ...
    • Effect of Solidification Time on Microstructural, Mechanical and Fatigue Properties of Solution Strengthened Ferritic Ductile Iron 

      Borsato, Thomas; Ferro, Paolo; Berto, Filippo; Carollo, Carlo (Journal article; Peer reviewed, 2019)
      Microstructural, mechanical, and fatigue properties of solution strengthened ferritic ductile iron have been evaluated as functions of different solidification times. Three types of cast samples with increasing thickness ...
    • Effects of different production technologies on mechanical and metallurgical properties of precious metal denture alloys 

      Ferro, Paolo; Battaglia, Eleonora; Capuzzi, Stefano; Berto, Filippo (Journal article; Peer reviewed, 2017)
      Abstract: Background: Precious metal alloys can be supplied in traditional plate form orinnovative drop form with high degree of purity. Objective: The aim of the present work is to evaluate the influence of precious metal ...
    • Experimental and numerical analysis of TIG-dressing applied to a steel weldment 

      Ferro, Paolo; Berto, Filippo; Bonollo, F.; Montanari, R (Journal article; Peer reviewed, 2018)
      Fatigue strength of welded joints is controlled above all by notch defects such as weld toe and weld root that act as stress concentrators. This is the reason why over the last years different post-weld fatigue improvement ...
    • Fatigue assessment of semi-circular notched specimens produced by Laser Engineered Net Shaping method 

      Razavi, Seyed Mohammad Javad; Bordonaro, Giancarlo; Ferro, Paolo; Berto, Filippo (Journal article; Peer reviewed, 2018)
      As a primary failure mechanism, fatigue failure of additively manufactured metallic parts has attracted considerable attention in both aerospace and biomedical applications. According to some specific design requirements, ...
    • 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 ...
    • Fatigue behavior of porous Ti-6Al-4V made by laser-engineered net shaping 

      Razavi, Seyed Mohammad Javad; Bordonaro, Giancarlo; Ferro, Paolo; Torgersen, Jan; Berto, Filippo (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 ...
    • A First Approach on Modelling the Thermal and Microstructure Fields During Aluminium Butt Welding Using the HYB PinPoint Extruder 

      Leoni, Francesco; Grong, Øystein; Fjær, Hallvard Gustav; Ferro, Paolo; Berto, Filippo (Peer reviewed; Journal article, 2020)
      Hybrid metal extrusion & bonding (HYB) is a new solid-state joining method for metals and alloys that utilizes continuous extrusion as a technique to enable aluminium filler metal additions. In the HYB case, heat is generated ...
    • Fracture behaviour of notched as-built EBM parts: Characterization and interplay between defects and notch strengthening behaviour 

      Peron, Mirco; Torgersen, Jan; Ferro, Paolo; Berto, Filippo (Journal article, 2018)
      Additive manufacturing (AM) offers the potential to economically produce customized components with complex geometries. However, the introduction of complex geometry goes hand in hand with the presence of notches. Thus, ...
    • Novel method for the fatigue strength assessment of heavy sections made by ductile cast iron in presence of solidification defects 

      Borsato, Thomas; Ferro, Paolo; Berto, Filippo (Journal article, 2018)
      The fatigue strength of ferritic, pearlitic, and solution strengthened ferritic ductile irons taken from heavy sections and characterized by long solidification times has been assessed. Starting from the idea of Murakami ...
    • Porosity effect on tensile behavior of Ti-6Al-4V specimens produced by laser engineered net shaping technology 

      Razavi, Seyed Mohammad Javad; Bordonaro, GG; Ferro, Paolo; Torgersen, Jan; Berto, Filippo (Journal article, 2018)
      Microstructural characteristics of additively manufactured Ti-6Al-4V specimens are analyzed in this study. Laser Engineered Net Shaping technology, a direct energy deposition additive manufacturing process, is used to ...
    • Strain evolution in cold-warm forged steel components studied by means of EBSD technique 

      Ferro, Paolo; Bonollo, Franco; Bassan, Fabio; Berto, Filippo (Journal article; Peer reviewed, 2017)
      Electron BackScatter Diffraction (EBSD) in conjunction with Field-Emission Environmental Scanning Electron Microscopy (FEG-ESEM) has been used to evaluate the microstructural and local plastic strain evolution in different ...
    • The influence of metallurgical data on residual stresses in Computational Welding 

      Romanin, Luca; Ferro, Paolo; Berto, Filippo (Journal article, 2018)
      Fusion welding processes are the primary joining techniques used in the fabrication of civil structures and mechanical engineering assemblies. The fusion of the parent and filler materials and the subsequent rapid cooling ...
    • The peak stress method to calculate residual notch stress intensity factors in welded joints 

      Colussi, Marco; Ferro, Paolo; Berto, Filippo; Meneghetti, G. (Journal article, 2018)
      According to the recent literature, the intensity of linear elastic residual stress fields near the toe region of a welded joint can be quantified by the residual notch stress intensity factors (R‐NSIFs). The computational ...
    • Using the Hybrid Metal Extrusion & Bonding (HYB) Process for Dissimilar Joining of AA6082-T6 and S355 

      Berto, Filippo; Sandnes, Lise; Filippo, Abbatinali; Grong, Øystein; Ferro, Paolo (Journal article; Peer reviewed, 2018)
      Hybrid Metal Extrusion & Bonding (HYB) is a new solid state joining technique that uses filler material addition and plastic deformation to create sound joints. The filler material addition makes the HYB process more ...

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