Prediction of the tensile strength of FDM specimens based on Tsai Hill criteria
This study investigates the mechanical behavior of 3D-printed polyethylene terephthalate glycol (PETG) polymer specimens subjected to tensile and shear testing, with a particular focus on the influence of raster orientation and shell contour. Specimens were fabricated using Fused Deposition Modeling...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Gruppo Italiano Frattura
2025-07-01
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| Series: | Fracture and Structural Integrity |
| Subjects: | |
| Online Access: | https://www.fracturae.com/index.php/fis/article/view/5416/4247 |
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| Summary: | This study investigates the mechanical behavior of 3D-printed polyethylene terephthalate glycol (PETG) polymer specimens subjected to tensile and shear testing, with a particular focus on the influence of raster orientation and shell contour. Specimens were fabricated using Fused Deposition Modeling (FDM) at three raster angles (0�, 45�, and 90�) and tested using both a mechanical extensometer and a Digital Image Correlation (DIC) system. The results indicate a significant influence of raster orientation on tensile and shear properties. 0� specimens exhibited the highest tensile strength, as the filament alignment was parallel to the loading direction. In contrast, 45� specimens demonstrated more ductile behavior. While the shell contour had minimal effect on 0� and 45� specimens, it enhanced stiffness and ductility in 90� specimens. Furthermore, the Tsai-Hill criterion was applied to predict the tensile strength at a 45� orientation. These findings contribute to a deeper understanding of the anisotropic behavior of 3D-printed materials and highlight the importance of raster orientation in optimizing mechanical performance. |
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| ISSN: | 1971-8993 |