PSI - Issue 48

Milan Travica et al. / Procedia Structural Integrity 48 (2023) 280–287 Travica et al / Structural Integrity Procedia 00 (2019) 000 – 000

285

6

Fig. 6 The relationship between average strain and the stage of deformation for all PRTS specimens, along with their standard deviation, was visualized 4. Conclusion Using the findings from previous research [1] conducted on plastic PRTS specimens, steel PRTS specimens with the same Single configuration were fabricated. Based on the results presented, the following conclusions can be derived:  The fractures observed in all PRTS specimens consistently occurred in the tear zone, with fracture locations being nearly identical. This indicates a consistent and predictable failure pattern. Additionally, the fracture surfaces and the diagram presented in Figure 4 provide evidence of the extremely brittle nature of the test tube fractures. The maximum stress value observed is comparable to the ultimate strength of the PRTS, further emphasizing the brittle fracture behavior.  The results obtained from this study confirm that the method proposed in reference [1] is applicable and suitable for steel PRTS specimens. The consistency in fracture locations and the similarity in stress values validate the effectiveness and reliability of the proposed method in characterizing the mechanical behavior of steel PRTS Acknowledgements Acknowledgements and Reference heading should be left justified, bold, with the first letter capitalized but have no numbers. Text below continues as normal. References Travica, Milan; Mitrovic, N.; Petrovic, A.; Trajkovic, I.; Milosevic, M.; Sedmak A. and Berto, F., Experimental Evaluation of Hoop Stress-Strain State of 3D Printed Pipe Ring Tensile Specimens, Metals 2022. Bouvier, S; Haddadi, H.; Lev´ee, P.; Teodosiu, C., Simple shear tests: experimental techniques and characterization of the plastic anisotropy of rolled sheets at large strains. J. Mater. Process. Technol., 2006, 172, 96 – 103. https://doi.org/10.1016/j.jmatprotec.2005.09.003. Pereira, A.F.G.; Prates, P.A.; Sakharova, N.A.; Oliveira, M.C.; Fernandes, J.V., On the identification of kinematic hardening with reverse shear test. Eng. Comput., 2015, 31, 681 – 690. https://doi.org/10.1007/s00366-014-0369-7. Zribi, T.; Khalfallah, A.; Belhadjsalah, H., 2013. Experimental characterization and inverse constitutive parameters identification of tubular materials for tube hydroforming process. Mater. Des. 49, 866 – 877. https://doi.org/10.1016/j. matdes.2013.02.077. Pierron, O.N., Koss, D.A., Motta, A.T., 2003. Tensile specimen geometry and the constitutive behavior of zircaloy-4. J. Nucl. Mater. 312, 257 – 261. https://doi.org/10.1016/S0022-3115(02)01554-4. Saikaly, W.E., Bailey, W.D., Collins, L.E., 1996. Comparison of ring expansion vs flat tensile testing for determining linepipe yield strength. Proc. Int. Pipeline Conf. IPC 1, 209 – 213. https://doi.org/10.1115/ipc1996-1825.