Mechanical and dimensional performance of poly(lactic acid) 3D‐printed parts using thin plate spline interpolation

Abstract

In additive manufacturing, determining the correct deposition parameters is very important as this can affect the final properties of printed parts. Since there is no agreement on the optimal level of the different printing parameters in reported results, this work evaluated the influences of layer thickness (LT), deposition speed (DS) and printing direction (PD) on tensile properties and dimensional accuracy of poly(lactic acid) 3D parts evaluating the possibility of using thin plate spline interpolation method (TPSIM) of data, a new approach, in determination of optimized fused deposition modeling process parameters. It was observed that the use of low levels of LT (0.10 mm), DS (40 mm/s), and PD (0°) provided parts with higher mechanical strength and dimensional performance. Denser parts showed lower anisotropy effect and, consequently, best tensile properties were obtained. TPSIM was an efficient mathematical analysis and well fitted results of predicted and experimental results.

Optimization of 3D printing parameters for high‐performance biodegradable materials

“…(2) The adjacent deposited filaments cause the air gap between interlayers. (3) The thermal history of materials affects the interfacial bonding of products 36 . Optimal 3D printing parameters can make the molecular chains between adjacent layers entanglement stronger, reducing the porosity and improving the mechanical properties of 3D printing products.…”

Analyze of Sunflower Oil incorporation in Poly(acrylic acid)/ Chitosan Sponges Using Thin Plate Spline Interpolation Method

“…Polynomial fit p55, Equation ( 4), was applied simultaneously to the experimental and the interpolated data to obtain a 3D surface that correlates MV, composition, and time, Equation (3). [10], [11] (4)…”

“…[8], [9] This method was used to calculate and estimate the torque values through rheometric tests and to evaluate the effect of parameters layer thickness, [10] deposition speed and printing direction on tensile properties and dimensional accuracy of PLA 3D printed parts. [11] The aim of this work was studied the mass variation (MV) of chitosan/ PAA in Dersani® oil and physiological saline solution using the TPSIM was used to evaluate the effect of time and composition in the fluid absorption.…”

The Influence of the Layer Height and the Filament Color on the Dimensional Accuracy and the Tensile Strength of FDM-Printed PLA Specimens

“…Neither in terms of the variation trend could there be found agreement in the previous research analyzed. In this regard, whilst most of the researchers found that the UTS of the parts manufactured by FFF is increasing with the decrease in the layer height [ 16 , 17 , 18 , 19 , 20 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 ], others concluded the opposite [ 14 , 35 , 36 ] or defined optimal values of this variable, situated inside a variation interval that was set for the optimization of the selected printing parameters [ 37 , 38 , 39 , 40 , 41 ]. These different or even controversial opinions could be explained by the fact that the chosen combinations of process parameters determined completely different thermal printing conditions as well as the distinct values adopted for the layer thickness, situated within a wide range (0.06 mm–0.6 mm) [ 13 ].…”