G
Giovanna Rotella
Researcher at University of Calabria
Publications - 31
Citations - 523
Giovanna Rotella is an academic researcher from University of Calabria. The author has contributed to research in topics: Machining & Surface integrity. The author has an hindex of 11, co-authored 31 publications receiving 368 citations. Previous affiliations of Giovanna Rotella include University of Mondragón & University of Salento.
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Finite element modeling of microstructural changes in dry and cryogenic cutting of Ti6Al4V alloy
TL;DR: In this paper, a customized FE model for describing the microstructural changes during dry and cryogenic cutting of Ti6Al4V is presented, which addresses the importance to modify the material behavior taking into account the microstructure changes and the cooling/lubrication effects during the cutting process.
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Surface integrity of machined additively manufactured Ti alloys
TL;DR: In this paper, the surface and subsurface modifications induced by turning operations performed on additively manufactured titanium alloys are investigated, and morphological, chemical and mechanical analyses on the pre- and post-machined samples highlight the influence of the production processes on their surface integrity underlying the need to properly redesign the machining parameters accordingly.
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Surface modification of Ti6Al4V alloy by pulsed Yb-laser irradiation for enhanced adhesive bonding
TL;DR: In this paper, the effect of pulsed laser ablation (Yb-fiber) on Ti6Al4V titanium alloy substrates for adhesive bonding was evaluated by means of SEM, XRD and wettability measurements.
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Finite Element Simulation of Semi-finishing Turning of Electron Beam Melted Ti6Al4V Under Dry and Cryogenic Cooling
Alberto Bordin,Stano Imbrogno,Giovanna Rotella,Stefania Bruschi,Andrea Ghiotti,Domenico Umbrello +5 more
TL;DR: In this article, a numerical analysis of cylindrical external turning on Electron Beam Melted (EBM) Ti6Al4V alloy is presented, where a Johnson-Cook constitutive equation is implemented as a flow stress model and adapted with respect to the wrought Ti6al4V Alloy.
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Innovative high-speed femtosecond laser nano-patterning for improved adhesive bonding of Ti6Al4V titanium alloy
TL;DR: In this article, the effect of femtosecond Yb fiber laser irradiation on Ti6Al4V titanium alloy is assessed using an extensive experimental campaign carried out to survey surface properties through the use of SEM, AFM, EDS mapping and contact angle measurements.