PSI - Issue 37

Evangelia Nektaria Palkanoglou et al. / Procedia Structural Integrity 37 (2022) 209–216 E. N. Palkanoglou et al. / Structural Integrity Procedia 00 (2019) 000 – 000

216

8

matrix and graphite, whereas a traction-separation law associated with a damage criterion was used for the interfacial layer. The effect of the distance between the particles was studied for two different combinations of particles. The type of combination of particles played a significant role on the start temperature of decohesion. More specifically, debonding began at the lowest temperature on a vermicular particle interacting with another vermicular one, whereas the phenomenon initiated at the highest temperature on a vermicular inclusion interacting with a graphite nodule. Furthermore, the shielding effect of a nodular inclusion was demonstrated: the fracture of a vermicular particle was significantly decelerated when interacting with a nodular one. In conclusion, the proposed methodology can be used to study the effect of other parameters that might influence the interaction between inclusions, such as the size or the orientation, as well as to take into consideration interaction problems with flake particles. References Andriollo, T., Thorborg, J., Tiedje, N.S., Hattel, J., 2015. Modeling of damage in ductile cast iron - the effect of including plasticity in the graphite nodules. IOP Conference Series: Materials Science and Engineering 84, 12-27. Dawson, S., 2009. Compacted graphite iron: Mechanical and physical properties for engine design. SAE Technical Papers, 241 – 46. Drago, A., Pindera, M.J., 2007. Micro-micromechanical analysis of heterogeneous materials: macroscopically homogeneous vs periodic microstructures. Composites Science and Technology 67, 1243 – 63. Greenstreet, W.L., Yahr, G.T., Valachovic, R.S., 1973. The behaviour of graphite under biaxial tension. Carbon 11, 43-57. Josefson, B.L., Stigh, U., Hjelm, H.E., 1995. A nonlinear kinematic hardening model for elastoplastic deformations in grey cast iron. Journal of Engineering Materials and Technology 117, 145-50. Hjelm, H.E., 1994. Yield surface for grey cast iron under biaxial stress. Journal of Engineering Materials and Technology 116, 148-154 Josefson, B.L., H.E. Hjelm. 1992. Modelling elastoplastic deformations in grey cast iron. In: Rie KT. et al. (eds) Low cycle fatigue and elasto plastic behaviour of materials 3, Springer: Dordrecht, pp. 465-72 Kanit, T., Forest, S., Galliet, I., Mounoury, V., Jeulin, D., 2003. Determination of the size of the representative volume element for random composites: statistical and numerical approach. International Journal of Solids and Structures 40, 3647 – 79. Kanouté, P., Boso, D. P., Chaboche, J. L., Schrefler, B.A., 2009. Multiscale methods for composites: A review. Archives of Computational Methods in Engineering 16, 31 – 75. McLaughlin, P.V., Frishmuth, R.E., 1976. Failure analysis of cast irons under general three dimensions stress state. Journal of EngineeringMaterials and Technology 98, 69 – 75. Nicoletto, G., Collini, L., Konečná, R., Bujnová, P., 2009. Strain heterogeneity and damage localization in nodular cast iron microstructures. Materials Science Forum 482, 255 – 58. Palkanoglou, E.N., Baxevanakis, K.P., Silberschmidt, V.V., 2020. Interfacial debonding in compacted graphite iron: Effect of thermal loading. Procedia Structural Integrity 28, 1286 – 94. Qiu, Y., Pang, J.C., Li, S.X., Yang, E.N., Fu, W.O., Liang, M.X., Zhang, Z.F. 2016. Influence of thermal exposure on microstructure evolution and tensile fracture behaviours of compacted graphite iron. Materials Science and Engineering A 664, 75-85. Qiu, Y., Pang, J.C., Yang, E.N., Li, S. X., Zhang, Z.F., 2016. Transition of tensile strength and damaging mechanisms of compacted graphite iron with temperature. Materials Science and Engineering A 677, 290-301. Seldin, E. J. 1966. Stress-strain properties of polycrystalline graphites in tension and compression at room temperature. Carbon 4, 177 – 91. Zhang, Y.Y., Pang J.C., Shen R.L., Qui, Y., Li, S.X., Zhang Z.F., 2018. Investigation on tensile deformation behaviour of compacted graphite iron based on cohesive damage model. Materials Science and Engineering A 713, 260-68.