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

• Main Authors: Biagio Palumbo, Francesco Del Re, Massimo Martorelli, Antonio Lanzotti, Pasquale Corrado
• Format: Article
• Language: English
• Published: MDPI AG 2017-02-01
• Series: Materials
• Subjects: Additive Manufacturing (AM); Direct Metal Laser Sintering (DMLS); Design of Experiments (DOE); Nested Effects Modeling (NEM); ANalysis of VAriance (ANOVA)
• Online Access: http://www.mdpi.com/1996-1944/10/2/144

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.