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Volume 9 International Journal of Advancements in Technology
ISSN: 0976-4860 3D Printing 2018
March 19-20, 2018
March 19-20, 2018 | London, UK
2nd International Conference on
3D Printing Technology and Innovations
Sandwich panel with lattice core for aircraft anti-ice system made by Selective Laser Melting
Sara Varetti, Carlo Giovanni Ferro, Andrea Emanuele Maria Casini, Andrea Mazza, Paolo Maggiore and Mariangela Lombardi
Polytechnic University of Turin, Italy
Additive Manufacturing (AM) technology offers the possibility to build strong and light components with complex
structures, as lattice, optimizing the strength/mass ratio. The goal of this work is the characterization of an innovative
sandwich panel with trabecular core made by Selective Laser Melting (SLM), used as heat exchanger for many industrial
applications, for example in aerospace field. In this case study, the panel is integrated into the leading edges of aircraft wings
and act as hot air anti-icing system and, at the same time, as impact absorber. The system, due to its lightness and shape, leads
to the optimization of the heat exchange, the improvement of the thermal efficiency, and the reduction of fuel use and gas
emission. A set of experimental and numerical tests is conducted on lattice specimens through a Design of Experiment (DOE).
Different design parameters were varied to understand how they affect the mechanical and thermal behavior: six different cell
shapes, varying cell size and volume fraction, were tested. The same experimental program is carried out for two different metal
alloys: AlSi10Mg and Ti6Al-4V. Mechanical tests involve compression test on single core and on the whole panel, flexural and
impact test. Further analysis on failure mechanism is carried out by observation with optical microscope. Thermal behavior of
the system is also investigated by preliminary thermal simulations, whose results are validated by experimental measuraments
of the temperature gradients on the external surface.
Recent Publications
1. C G Ferro et al. (2017) A robust multifunctional sandwich panel design with trabecular structures by the use of additive
manufacturing technology for a new de-icing system. Technologies. 5 (2):35. Doi:10.3390/technologies5020035.
Biography
Sara Varetti is a PhD student in the Department of Applied Science and Technology (DISAT) of Polytechnic University of Turin, Italy. Her reaserch activity is focused
on characterization of materials used for Selective Laser Melting and in particular on aluminum alloys. Among her activities there is the design and characterization
of an innovative anti-ice system for aircraft, which is patented. This study is carried out in collaboration with the Department of Mechanical Engineering and
Aerospace (DIMEAS), Polytechnic University of Turin, Italy.
Sara Varetti et al., Int J Adv Technol 2018, Volume 9
DOI: 10.4172/0976-4860-C1-002
Figure 1: Schematic drawing of the panel
integrated into the leading edge of wings.
Figure 2: 3D models of specimens with different cell shapes:
a) bccz, b) octet-truss, c) rombic dodecahedron, d) auxetic, e)
Gyroid and f) schwarz diamond.