PSI - Issue 5

Sameera Naib et al. / Procedia Structural Integrity 5 (2017) 1417–1424 Naib et al./ Structural Integrity Procedia 00 (2017) 000 – 000

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the way to in-depth parametric studies using the finite element model. Additionally, the angle of slip lines around the notch was found to be approximately 45° around the notch tip and tends to deviate as it moves away from the notch. Hereby, slip lines may be attracted by regions of minimum resistance to plastic deformation (hardness). These observations and results bolster the development and improvement of weld homogenization schemes based on slip line theory. Acknowledgements The authors would like to acknowledge the financial support of FWO Vlaanderen (Research Foundation — Flanders, research grant nr. G.0609.15N) and ARRS (Slovenian Research Agency). The technical assistance of Dr. Koen Van Minnebruggen, Florence Keppens and Marc Gimenez Avalos is acknowledged. References BS 8571:2014 - Method of test for determination of fracture toughness in metallic materials using single edge notched tension (SENT) specimens, 2014. BSI. Ewing, D.J.F., Griffiths, J.R., 1971. The applicability of slip-line field theory to contained elastic-plastic flow around a notch. J. Mech. Phys. Solids 19, 389 – 394. doi:10.1016/0022-5096(71)90006-8 Gerdeen, C.J., 1979. A critical Evaluation of plastic behavior data and a unified definition of plastic loads for pressure components. Welding Research Council. Hao, S., Cornec, A., Schwalbe, K.-H., 1997. Plastic stress-strain fields and limit loads of a plane strain cracked tensile panel with a mismatched welded joint. Int. J. Solids Struct. 34, 297 – 326. doi:10.1016/S0020-7683(96)00021 2 Hertelé, S., O’Dowd, N., Van Minnebruggen, K., Verstraete, M., De Waele, W., 2015. Fracture mechanics analysis of heterogeneous welds: Numerical case studies involving experimental heterogeneity patterns. Eng. Fail. Anal. 58, 336 – 350. doi:10.1016/j.engfailanal.2015.07.007 Hertelé, S., Van Gerven, F., Naib, S., Gubeljak, N., De Waele, W., 2016. Experimental and numerical slip line analysis of welded single-edge notched tension specimens. Procedia Struct. Integr., 21st European Conference on Fracture, ECF21, 20-24 June 2016, Catania, Italy 2, 1763 – 1770. doi:10.1016/j.prostr.2016.06.222 Hill, R., 1950. The Mathematical Theory of Plasticity. Clarendon Press. Joch, J., Ainsworth, R.A., Hyde, T.H., 1993. Limit Load and J-Estimates for Idealised Problems of Deeply Cracked Welded Joints in Plane-Strain Bending and Tension. Fatigue Fract. Eng. Mater. Struct. 16, 1061 – 1079. doi:10.1111/j.1460-2695.1993.tb00078.x Miller, A.G., 1988. Review of Limit Load of Structures Containing Defects. Int. J. Press. Vessels Pip. 32, 197 – 327. Naib, S., Van Minnebruggen, K., De Waele, W., Hertelé, S., 2016. Sensitivity study of crack driving force predictions in heterogeneous welds using Vickers hardness maps, in: NAFEMS India Conference. NAFEMS 3D, p. 77. Verstraete, M., Hertelé, S., Van Minnebruggen, K., Denys, R., De Waele, W., 2013. UGent guidelines for SENT testing, in: 6th International Pipeline Technology Conference, Proceedings. Presented at the 6th International Pipeline Technology Conference, Soete Laboratory. Verstraete, M.A., Denys, R.M., Van Minnebruggen, K., Hertelé, S., De Waele, W., 2013. Determination of CTOD resistance curves in side-grooved Single-Edge Notched Tensile specimens using full field deformation measurements. Eng. Fract. Mech. 110, 12 – 22. doi:10.1016/j.engfracmech.2013.07.015 Verstraete, M.A., Hertelé, S., Denys, R.M., Van Minnebruggen, K., De Waele, W., 2014. Evaluation and interpretation of ductile crack extension in SENT specimens using unloading compliance technique. Eng. Fract. Mech. 115, 190 – 203. doi:10.1016/j.engfracmech.2013.11.004