PSI - Issue 83

Davide D’Andrea et al. / Procedia Structural Integrity 83 (2026) 256–264

264

AM material and S-N curve evidenced changes in slopes and fatigue limits. Significant differences were also observed in the plastic work rate, since the traditionally manufactured material exhibited higher temperatures under fatigue loading, indicating greater plastic strain and consequently grater energy dissipation. An increasing trend in the plastic work rate was observed for both specimen batches as the applied stress level increased. Finally, crack propagation modeling based on the temperature data provided further insight into the number of cycles associated with the third phase of the thermographic response for stress levels above the fatigue limit. References Chakotay, E., Shneck, R. Z., Golan, O., Carmi, R., Mega, M., Alon, I., Yakov, R., & Busiba, A. (2024). Effects of Anisotropic Microstructure and Load Ratio on Fatigue Crack Propagation Rate in Additively Manufactured Ti-6Al-4V Alloy. Metals 2024, Vol. 14, 14 (12). https://doi.org/10.3390/met14121405 Crisafulli, D., Fintová, S., Santonocito, D., & D’Andrea, D. (2024). Microstructural characterization and mechanical behaviour of laser powder Bed Fusion stainless steel 316L. Theoretical and Applied Fracture Mechanics , 131 , 104343. https://doi.org/10.1016/j.tafmec.2024.104343 Curà, F., Curti, G., & Sesana, R. (2005). A new iteration method for the thermographic determination of fatigue limit in steels. International Journal of Fatigue , 27 (4), 453–459. https://doi.org/10.1016/j.ijfatigue.2003.12.009 Fargione, G., Geraci, A., La Rosa, G., & Risitano, A. (2002). Rapid determination of the fatigue curve by the thermographic method. International Journal of Fatigue , 24 (1), 11–19. https://doi.org/10.1016/S0142-1123(01)00107-4 Fedorova, A. Y., Bannikov, M. V., Plekhov, O. A., & Plekhova, E. V. (2012). Infrared thermography study of the fatigue crack propagation. Fracture and Structural Integrity , 6 (21), 46–53. https://doi.org/10.3221/IGF-ESIS.21.06 Garcias, J. F., Martins, R. F., Branco, R., Marciniak, Z., Macek, W., Pereira, C., & Santos, C. (2021). Quasistatic and fatigue behavior of an AISI H13 steel obtained by additive manufacturing and conventional method. Fatigue and Fracture of Engineering Materials and Structures , 44 (12), 3384–3398. https://doi.org/10.1111/ffe.13565 Haghdadi, N., Laleh, M., Moyle, M., & Primig, S. (2020). Additive manufacturing of steels: a review of achievements and challenges. Journal of Materials Science 2020 56:1 , 56 (1), 64–107. https://doi.org/10.1007/s10853-020-05109-0 Huang, J., Pastor, M. L., Garnier, C., & Gong, X. (2017). Rapid evaluation of fatigue limit on thermographic data analysis. International Journal of Fatigue , 104 (2), 293–301. https://doi.org/10.1016/j.ijfatigue.2017.07.029 Joshi, K., Promoppatum, P., Quek, S. S., Raghavan, S., Johan, N. S., Shukla, S., Samudrala, S., van der Veen, S., & Jhon, M. H. (2023). Effect of porosity distribution on the strength and strain-to-failure of Laser-Powder Bed Fusion printed Ti–6Al–4V. Additive Manufacturing , 75 (1), 103738. https://doi.org/10.1016/j.addma.2023.103738 La Rosa, G., & Risitano, A. (2000). Thermographic methodology for rapid determination of the fatigue limit of materials and mechanical components. International Journal of Fatigue , 22 (1), 65–73. https://doi.org/10.1016/S0142-1123(99)00088-2 Ponticelli, G. S., Panciroli, R., Venettacci, S., Tagliaferri, F., & Guarino, S. (2022). Experimental investigation on the fatigue behavior of laser powder bed fused 316L stainless steel. CIRP Journal of Manufacturing Science and Technology , 38 , 787–800. https://doi.org/10.1016/j.cirpj.2022.07.007 Risitano, A., Fargione, G., Giudice, F., & Patanè, G. (2015). Evaluation of the Relative Plastic Work Factor During the Fatigue Test. Procedia Engineering , 109 (849), 346–355. https://doi.org/10.1016/j.proeng.2015.06.242 Sanaei, N., & Fatemi, A. (2021). Defects in additive manufactured metals and their effect on fatigue performance: A state-of-the-art review. Progress in Materials Science , 117 , 100724. https://doi.org/10.1016/j.pmatsci.2020.100724 Santonocito, D., Fintová, S., Di Cocco, V., Iacoviello, F., Risitano, G., & D’Andrea, D. (2023). Comparison on mechanical behavior and microstructural features between traditional and AM AISI 316L. Fatigue and Fracture of Engineering Materials and Structures , 46 (2), 379–395. https://doi.org/10.1111/FFE.13872 Vieira, R. B., Gonzáles, G. L. G., & Freire, J. L. F. (2017). Thermography Applied to the Study of Fatigue Crack Propagation in Polycarbonate. Experimental Mechanics 2017 58:2 , 58 (2), 269–282. https://doi.org/10.1007/s11340-017-0341-8 Wei, W., He, L., Sun, Y., & Yang, X. (2024). A Review of Fatigue Limit Assessment Using the Thermography-Based Method. Metals 2024, Vol. 14, 14 (6). https://doi.org/10.3390/met14060640