Parameter Optimization
for Biocompatible Polyamide Used
in Selective Laser Sintering (SLS)
Dan Ioan Stoia, Liviu Marsavina, Alexandru Cosa, and Andreea Nicoara
Abstract One of the major issues in additive manufacturing concerns the geometrical and mechanical properties of its products. Selective laser sintering uses a laser
beam that binds together the biocompatible polyamide powder, having as results rigid
parts that can be used for mechanical constructions. The biocompatibility of the material makes the construction appropriate to interact with human body. Optimization
of manufacturing parameters was conducted using Taguchi’s method considering
three parameters: energy density, temperature of the building environment, and part
orientation taken at three levels (L9, 3 × 3 orthogonal array). The output parameter considered for computing the signal-to-noise (SN) ratio (using maximization
criterion) was the tensile strength of the samples. The optimal parameter plan for
acquiring the highest mechanical strength will further be used on the machine for
developing a surgical, single use, osteotomy guide.
1 Introduction
The reliability of the additive manufacturing process can be evaluated by the quality
of its products. These had to meet geometrical tolerances, anticipated shape and
mechanical properties all together [1–3]. None of the additive technologies available
on market produce parts that are free of errors. However, the endless possibilities in
D. I. Stoia (B) · L. Marsavina · A. Cosa · A. Nicoara
Politehnica University Timisoara, Mihai Viteazul no. 1, Timisoara, Romania
e-mail: dan.stoia@upt.ro
L. Marsavina
e-mail: liviu.marsavina@upt.ro
A. Cosa
e-mail: alex_cosa@yahoo.com
A. Nicoara
e-mail: andreean9@yahoo.com
© Springer Nature Switzerland AG 2021
N. Herisanu and V. Marinca (eds.), Acoustics and Vibration of Mechanical
Structures—AVMS 2019, Springer Proceedings in Physics 251,
https://doi.org/10.1007/978-3-030-54136-1_32
323
for Biocompatible Polyamide Used
in Selective Laser Sintering (SLS)
Dan Ioan Stoia, Liviu Marsavina, Alexandru Cosa, and Andreea Nicoara
Abstract One of the major issues in additive manufacturing concerns the geometrical and mechanical properties of its products. Selective laser sintering uses a laser
beam that binds together the biocompatible polyamide powder, having as results rigid
parts that can be used for mechanical constructions. The biocompatibility of the material makes the construction appropriate to interact with human body. Optimization
of manufacturing parameters was conducted using Taguchi’s method considering
three parameters: energy density, temperature of the building environment, and part
orientation taken at three levels (L9, 3 × 3 orthogonal array). The output parameter considered for computing the signal-to-noise (SN) ratio (using maximization
criterion) was the tensile strength of the samples. The optimal parameter plan for
acquiring the highest mechanical strength will further be used on the machine for
developing a surgical, single use, osteotomy guide.
1 Introduction
The reliability of the additive manufacturing process can be evaluated by the quality
of its products. These had to meet geometrical tolerances, anticipated shape and
mechanical properties all together [1–3]. None of the additive technologies available
on market produce parts that are free of errors. However, the endless possibilities in
D. I. Stoia (B) · L. Marsavina · A. Cosa · A. Nicoara
Politehnica University Timisoara, Mihai Viteazul no. 1, Timisoara, Romania
e-mail: dan.stoia@upt.ro
L. Marsavina
e-mail: liviu.marsavina@upt.ro
A. Cosa
e-mail: alex_cosa@yahoo.com
A. Nicoara
e-mail: andreean9@yahoo.com
© Springer Nature Switzerland AG 2021
N. Herisanu and V. Marinca (eds.), Acoustics and Vibration of Mechanical
Structures—AVMS 2019, Springer Proceedings in Physics 251,
https://doi.org/10.1007/978-3-030-54136-1_32
323