Matrix Raster Angle Effects on Tensile Properties of Additively Manufactured Unidirectional Carbon Fiber/Polyamide Composites
2026 11th International Conference on Recent Advances in Air and Space Technologies (RAST), İstanbul, Türkiye, 13 - 15 Mayıs 2026, ss.1-5, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Doi Numarası: 10.1109/rast69551.2026.11672333
- Basıldığı Şehir: İstanbul
- Basıldığı Ülke: Türkiye
- Sayfa Sayıları: ss.1-5
- Orta Doğu Teknik Üniversitesi Adresli: Evet
Özet
This study investigates the mechanical implications of decoupling the matrix raster angle from the reinforcement fiber angle in additively manufactured carbon fiber/polyamide composites. Three specimen groups were manufactured and tensile tested: pure polyamide with raster angles of ±45°, carbon fiber reinforced polyamide with raster angles of ±45°, and carbon fiber reinforced polyamide with raster angles of +65°/-25°. Reinforced specimens included four layers of unidirectional continuous carbon fiber reinforcement oriented in the 0° direction. The addition of continuous fibers significantly enhanced the tensile performance when compared to the unreinforced parts, increasing the tensile modulus and ultimate tensile strength by 16.5-fold and 7.4-fold, respectively. While matrix raster angle did not significantly impact the part’s tensile modulus, a slight correlation with the ultimate tensile strength was observed, showing a 17 MPa variance between the two groups. These findings highlight a critical parameter to consider during design and manufacture of high-performance additive manufactured parts, specifically regarding the influence of the printing bed orientation and angles between fiber and the matrix toolpaths.