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| Naji, M. |
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| Mohamed, Tarek |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Damore, Alberto
University of Campania "Luigi Vanvitelli"
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2024The process‐structure–property relationship of 3D printed G‐Polymer using fused filament fabrication techniquecitations
- 2019A method to predict the fatigue life and the residual strength of composite materials subjected to variable amplitude (VA) loadingscitations
- 2018Self-learning health monitoring algorithm in composite structurescitations
- 2010The anomalies of glassy polymers at nanoscale from the continuum mechanics perspective
- 2009The Relative Placement of Linear Viscoelastic Functions in Amorphous Glassy Polymerscitations
- 2007The twist-bending behavior of forward swept wings: A case study of a glass/carbon hybrid composite structurecitations
- 2006Constitutive law describing the phenomenology of (sub-yield) mechanically stimulated glassescitations
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article
The process‐structure–property relationship of 3D printed G‐Polymer using fused filament fabrication technique
Abstract
The ever-increasing demand for additive manufacturing (AM) is driven by the technology's rapid prototyping and flexible manufacturing benefits. Among the various AM techniques, fused filament fabrication (FFF) is one of the most commonly used techniques, in which thermoplastic polymer filaments are deposited layer by layer to create the final part. This technique has been used extensively in various sectors. However, new materials have yet to be developed for use in FFF. This research aims to introduce a new biodegradable highly amorphous polyvinyl alcohol (HAVOH), commercially known as G-Polymer (GP), into the scope of FFF, to propose a process window for the fabrication of parts with enhanced mechanical properties and to discover the process-structure–property relationship for this material. This study investigates the effect of five key parameters in GP FFF, including raster angle, number of contours, nozzle temperature, build platform temperature, and print speed. The results of the chemical, thermal, and thermo-mechanical analysis of the filaments before and after hot extrusion of the 3D printer nozzle showed a significant increase in the mechanical properties of the hot-extruded filaments. In addition, the mechanical characterization of 3D printed parts showed that increasing the number of contours can improve the mechanical properties of parts, while the raster angle can have a complex effect. The mechanical properties of the parts are also improved by reducing the temperature of the nozzle and the build platform. Printing speed, as an essential parameter in AM, was related to the previously mentioned parameters, and the results showed that increasing the printing speed could improve the UTS and Young's modulus of the 3D printed part.