Issue 41

M. Vormwald et alii, Frattura ed Integrità Strutturale, 41 (2017) 114-122; DOI: 10.3221/IGF-ESIS.41.16 121 proportional loading cases. The reason for this discrepancy is only to a minor extent due to the applied criterion according to Findley. In [13] it is shown that also other criteria fail to explain the experimental results. The decoupling of the loading cases is mainly attributed to the local decoupling of the sites of maximum stresses in the 3D-notch, Fig. 8. For an improvement of prediction accuracy either the geometry model of the general assessment approach must be revisited. Figure 11 : Normalised interaction lines for N = const. A CKNOWLEDGEMENTS he authors gratefully acknowledge the financial support of the research Project A 288 by the “Research Association for the Iron and Metalworking Industry e. V.” (AVIF) and the “Foundation Research on Steel Application”. Technical support during the project was given by the Research Association of Automotive Technology FAT. The specimens were provided by “Benteler Automobiltechnik GmbH” and the support is highly appreciated. R EFERENCES [1] Kaffenberger, M., Vormwald, M., Application of the notch stress concept to the real geometry of weld end points, Mat.-wiss. u. Werkstofftech., 42 (2011) 289-297. [2] Kaffenberger, M., Vormwald, M., Fatigue resistance of weld ends - Analysis of the notch stress using real geometry, Mat.-wiss. u. Werkstofftech., 42 (2011) 874-880. [3] Kaffenberger, M., Malikoutsakis, M., Savaidis, G., Vormwald, M., Fatigue resistance of weld ends, Comput. Mater. Sci., 52 (2012) 287-292. [4] Kaffenberger, M., Vormwald, M., Considering size effects in the notch stress concept for fatigue assessment of welded joints, Comput. Mater. Sci., 64 (2012) 71-78. [5] Kaffenberger, M., Vormwald, M., Schwingfestigkeit von Schweissnahtenden und Übertragbarkeit von Schweissverbindungswöhlerlinien, Mater. Test., 55 (2013) 553-560. [6] Shams, E., Malikoutsakis, M., Savaidis, G., Vormwald, M., Notch stress and fracture mechanics based assessment of fatigue of seam weld ends under shear loading, Fatigue Fract. Eng. Mater. Struct., 37 (2014) 740-750. [7] Shams, Vormwald, M., Fatigue of weld ends under combined in- and out-of-phase multiaxial loading, Frattura ed Integrità Strutturale, 38 (2016) 114-120. [8] Sonsino, C.M., Multiaxial fatigue of welded joints under in-phase and out-of-phase local strains and stresses, Int. J. Fatigue, 17 (1995) 55-70. [9] Eibl, M., Sonsino, C.M., Kaufmann, H., Zhang, G., Fatigue assessment of laser welded thin sheet aluminium, Int. J. Fatigue, 25 (2003) 719-731.