PSI - Issue 41

Cosmin-Florin Popa et al. / Procedia Structural Integrity 41 (2022) 557–563 Author name / Structural Integrity Procedia 00 (2019) 000–000

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Fig. 7. IZOD impact strength and standard deviation for the specimens from PLA and PETG with different thicknesses

4. Conclusions The present paper presents the results of an experimental investigation carried out on PLA and PETG specimens obtained by additive manufacturing. The specimens were manufactured under the same conditions but with four difference thicknesses. The following conclusions could be drawn:  The linear elastic domain has a lower deflection for PLA specimens compared to PETG.  It can be seen that the average total deflection for PETG specimens is higher compared with the specimens from PLA.  Higher impact forces was observed for the specimens from PLA.  A better accuracy of the results was recorded for the PETG specimens.  Brittle fracture was observed for all specimens, independent on thicknesses.  The values of the IZOD impact strength have similar results for both materials. Acknowledgements The project leading to this application has received funding from the European Union's Horizon 2020 research and innovation program under grant agreement No 857124. References Ailinei I.I., Galatanu S.V., Marsavina L., 2021, The effects of layers orientation on impact energy evaluation of FDM printed specimens. Mat Design Process Comm. 3(6): e267, 2021. Valean C, Liviu M., Marghitas P. M., Emanoil L., Mohammad J. R., Filippo B., 2020 Effect of manufacturing parameters on tensile properties of FDM printed specimens, Procedia Structural Integrity 26, 313-320. Valean C., Liviu M., Marghitas P. M., Emanoil L., Mohammad J. R., Filippo B., Roberto B., 2020 The effect of crack insertion for FDM printed PLA materials on Mode I and Mode II fracture toughness, Procedia Structural Integrity 28, 1134-1139. Durugashyam K., Indra R. M., Balakrishna A. Satyanarayana K., 2019, Experimental investigation on mechanical properties of PETG material processed by fused deposition modeling method, Materials Today: Proceedings 18(6), 2052-2059. Fu X., Zhang X., Huang Z., 2021, "Axial crushing of Nylon and Al/Nylon hybrid tubes by FDM 3D printing, Volume 256, 15 January 2021," Composite Structures, vol. Volume, no. 256, 2021. Gtl P., Ch S., Tezeswi T., 2021, Dynamic Characterization of Additively Manufactured Polylactide (PLA), Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications. Krausz T., Ailinei I.I., Galatanu S.V., Marsavina L., 2021, Charpy impact properties and numerical modeling of polycarbonate composites. Mat Design Process Comm. 2021; 3: e260, 2021. Hadi N., Interlayer fracture energy of 3D-printed PLA material, 2019, The International Journal of Advanced Manufacturing Technology 101(11). Haradikkumar P., Darshan R., Robert L. W., Ankur J., 2018 Measurement of anisotropic thermal conductivity and inter-layer thermal contact resistance in polymer fused deposition modeling (FDM), Additive Manufacturing 21, 84-90. Mohd F. B. A., Faiz R.R., Mohd R. A., Sudin M. N., Shafizal M., 2020, Influence of layer thickness and infill design on the surface roughness of PLA, PETG and metal copper materials, Proceedings of Mechanical Engineering Research Day 2020.