PSI - Issue 61

Artem Pepeliaev et al. / Procedia Structural Integrity 61 (2024) 224–231 Artem Pepeliaev / Structural Integrity Procedia 00 (2019) 000 – 000

225

2

thermoplastic polymers were adapted for 3D-printing to achieve high strength, heat resistance, rigidity, and other increased physical-mechanical properties, required in high-demanding applications. The resulting mechanical properties are influenced by the controllable printing parameters such as nozzle diameter, infill angle and density, printing speed and others (Patel et al., 2022) . Increased mechanical characteristics, such as modulus of elasticity, tensile strength and stiffness can be achieved by introducing short reinforcing fibers into the polymer matrix (Bhandari et al., 2019; Jayanth and Senthil, 2019; Lobov et al., 2023; Ramalingam et al., 2020; Thomas, 2021) . This study is focused on the experimental investigation of the effect of manufacturing parameters and microstructural characteristics on the elastic properties of 3D-printed ABS, PA12 and PET-G samples reinforced with short glass and carbon fibers. The mechanical properties of these specimens were evaluated in a series of tensile tests and compared with those of samples of the same material but without any additional reinforcements. The effect of printing parameters, such as infill angle and nozzle diameter, was also studied.

Nomenclature ABS

acrylonitrile butadiene styrene

PA12 polyamide 12 (nylon) PET-G polyethylene terephthalate glycol ABS acrylonitrile butadiene styrene CF carbon fiber GF glass fiber FDM fused deposition modelling FFF fused filament fabrication

2. Materials and methods

2.1. Samples manufacturing The samples were manufactured using ABS, PA12 and PET-G polymers, with and without addition of short fibers, using 1.75 mm filament on the Raise3D Pro2 Plus 3D printer, with high accuracy and confirmed reproducibility. The samples were manufactured using two types of infill patterns: with 0 o and 90 o orientation angle. Standard specimens (Fig. 1) were created in accordance with ISO 527-2:2012 for tensile tests. Insertions were added to the Fig. 1 to show infill orientation angle and also corresponding parts of real produced specimens.

0°

0°

(a)