PSI - Issue 47

Liviu Marsavina et al. / Procedia Structural Integrity 47 (2023) 744–748 Author name / Structural Integrity Procedia 00 (2019) 000–000

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Fig. 4. Fracture load versus specimen radius. Fig. 5. The energy versus specimen radius. The V-notch fractured specimen is shown in Fig. 6 and it could be seen that the notch is extended through the contour layers without local plastic deformations, while for the round notch the contour layers suffer plastic deformations, Fig. 7, which could explain the higher loads and energy required to break the specimen.

Fig. 6. Fracture path for V-notch specimen.

Fig. 7. Fracture path for round (  = 2.2 mm) notch specimen. Gebisa and Lemu (2019) pointed out that the number of outside contours and the thickness of contour have not much influence on the tensile properties of FDM manufactured parts. However, in the case of notched components looks to have higher influence, Fig. 7.