Open AccessTensile Properties of 3D Printed Polymeric Pieces: Comparison of Several Testing Setups
Author(s) -
Andrés Romero,
Marcelo T. Piován,
Carlos Adrián Mainetti,
Darío Stechina,
Sandra Mendoza,
Héctor Martín,
Claudio Maggi
Publication year - 2021
Publication title -
ingeniería e investigación/ingeniería e investigación
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.204
H-Index - 12
eISSN - 2248-8723
pISSN - 0120-5609
DOI - 10.15446/ing.investig.v41n1.84467
Subject(s) - fused deposition modeling , consistency (knowledge bases) , tensile testing , thermoplastic , mechanical engineering , 3d printing , computer science , ultimate tensile strength , engineering drawing , materials science , engineering , composite material , artificial intelligence
This work aims to evaluate and compare variations of a methodology for performing tensile tests on thermoplastic specimens constructed by additive manufacturing technologies (AMT) with filament deposition modeling (FDM). The testing procedures of pieces made in FDM machines do not yet have any conclusive standards because 3D printing, as a disruptive and exponentially growing technology, has not allowed enough time to reach a definitive scientific consensus. Nowadays, testing standards for injected thermoplastic parts or laminated composites are employed as substitutes with careful implementation. A comparative study was carried out on the elasticity modulus, determined within the framework of the same standard but with different measuring devices and testing machines. These machines cover a broad range from professional automated high precision machines to lab and specialized machines. Sets of 3Dprinted specimens with identical manufacturing parameters were constructed in a commercial 3D printer. An analysis of variance was performed in order to evaluate the consistency and significance of experimental data for the same polymer, considering the machine type and its corresponding setup. From the experimental data, it is concluded that, with the due care, all evaluated testing setups can reach comparable results, especially in the absence of sophisticated and expensive measuring systems.