Browsing NTNU Open by Author "Leoni, Francesco"
Now showing items 1-9 of 9
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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 ... -
Functionally Graded Additive Manufacturing: Bridging the Gap between Design and Material Extrusion
Leoni, Francesco; Dal Fabbro, Pierandrea; Rosso, Stefano; Grigolato, Luca; Meneghello, Roberto; Concheri, Gianmaria; Savio, Gianpaolo (Peer reviewed; Journal article, 2023)Nowadays, the use of 3D printing is becoming a key process for on-demand and customized manufacturing. One of the most flexible 3D printing techniques is fused deposition modeling (FDM), where the combination of multiple ... -
Mechanical behavior of gas metal arc AA6082-T6 weldments
Leoni, Francesco; Sandnes, Lise; Grong, Øystein; Berto, Filippo (Journal article; Peer reviewed, 2019)A series of experiments have been conducted to determine the mechanical properties of AA6082-T6 plates which have been joined by means of the Gas Metal Arc technique. Hardness Vickers tests, bending tests, tensile tests, ... -
Mechanical Behaviour of Gas Metal Arc AA6082-T6 Welments
Leoni, Francesco (Master thesis, 2018)The purpose of this work is to determine the mechanical properties of AA6082-T6 plates which have been welded with the Gas Metal Arc technique, which is one of the most common welding technology used in industrial applications. ... -
Mechanical testing of gas metal arc AA6082-T6 weldments
Leoni, Francesco; Sandnes, Lise; Grong, Øystein; Berto, Filippo (Peer reviewed; Journal article, 2021)Tensile, fatigue, bending, Charpy, and microhardness tests were carried out both on the AA6082-T6 parent material and on the gas metal arc weldments. The results of Charpy tests revealed higher energy absorption values for ... -
On the Hybrid Metal Extrusion & Bonding (HYB)
Leoni, Francesco (Doctoral theses at NTNU;2022:92, Doctoral thesis, 2022) -
Process Modelling Applied to Aluminium-Steel Butt Welding by Hybrid Metal Extrusion and Bonding (HYB)
Leoni, Francesco; Grong, Øystein; Celotto, Ambra; Fjær, Hallvard Gustav; Ferro, Paolo; Berto, Filippo (Peer reviewed; Journal article, 2022)In the present investigation, the numerical code WELDSIM is used to simulate butt welding of 4 mm thick plates of S355 steel and AA6082-T6 by Hybrid Metal Extrusion and Bonding (HYB). This is a new solid state joining ... -
Rapid calculation of residual stresses in dissimilar s355– aa6082 butt welds
Leoni, Francesco; Fjær, Hallvard Gustav; Ferro, Paolo; Berto, Filippo (Peer reviewed; Journal article, 2021)An analytical model is proposed to rapidly capture the thermal and residual stresses values induced by the hybrid metal extrusion and bonding (HYB) process on dissimilar-metal butt-welded joints. The power input for two ... -
A Semi-Analytical Model for the Heat Generation during Hybrid Metal Extrusion and Bonding (HYB)
Leoni, Francesco; Grong, Øystein; Ferro, Paolo; Berto, Filippo (Journal article; Peer reviewed, 2021)