PSI - Issue 47

Mohammad Reza Khosravani et al. / Procedia Structural Integrity 47 (2023) 454–459

459

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Author name / Structural Integrity Procedia 00 (2023) 000–000

experimental observations, we concluded that fracture load decreased while printing speed increased. Particularly, in CT tests, highest and lowest fracture loads are 7809.24 ± 17 . 1 and 5438.01 ± 7 . 4 N obtained from tests on the specimens printed at 20 mm / s and 80mm / s, respectively. At the lower print speed, the filaments are closely packed and fused together. It leads to a continuous medium for crack propagation. Experimental observations confirmed that crack growth occurred 45 ◦ to the initial crack in 45 ◦ / -45 ◦ specimens, but it is parallel to the initial crack in 0 ◦ / 90 ◦ test coupons.

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