Tensile Properties Characterization of AlSi10Mg Parts Produced by Direct Metal Laser Sintering via Nested Effects Modeling

Biagio Palumbo; Francesco Del Re; Massimo Martorelli; Antonio Lanzotti; Pasquale Corrado

doi:10.3390/ma10020144

Tensile Properties Characterization of AlSi10Mg Parts Produced by Direct Metal Laser Sintering via Nested Effects Modeling

Materials (Basel). 2017 Feb 8;10(2):144. doi: 10.3390/ma10020144.

Authors

Biagio Palumbo¹, Francesco Del Re², Massimo Martorelli³, Antonio Lanzotti⁴, Pasquale Corrado⁵

Affiliations

¹ Department of Industrial Engineering, University of Naples Federico II, P.le Tecchio 80, 80125 Napoli, Italy. biagio.palumbo@unina.it.
² Department of Industrial Engineering, University of Naples Federico II, P.le Tecchio 80, 80125 Napoli, Italy.
³ Department of Industrial Engineering, University of Naples Federico II, P.le Tecchio 80, 80125 Napoli, Italy. massimo.martorelli@unina.it.
⁴ Department of Industrial Engineering, University of Naples Federico II, P.le Tecchio 80, 80125 Napoli, Italy. antonio.lanzotti@unina.it.
⁵ MBDA Italia S.P.A., Via Calosi 105, 80070 Bacoli, Italy. pasquale.corrado@mbda.it.

Abstract

A statistical approach for the characterization of Additive Manufacturing (AM) processes is presented in this paper. Design of Experiments (DOE) and ANalysis of VAriance (ANOVA), both based on Nested Effects Modeling (NEM) technique, are adopted to assess the effect of different laser exposure strategies on physical and mechanical properties of AlSi10Mg parts produced by Direct Metal Laser Sintering (DMLS). Due to the wide industrial interest in AM technologies in many different fields, it is extremely important to ensure high parts performances and productivity. For this aim, the present paper focuses on the evaluation of tensile properties of specimens built with different laser exposure strategies. Two optimal laser parameters settings, in terms of both process quality (part performances) and productivity (part build rate), are identified.

Keywords: ANalysis of VAriance (ANOVA); Additive Manufacturing (AM); Design of Experiments (DOE); Direct Metal Laser Sintering (DMLS); Nested Effects Modeling (NEM).