TY - JOUR A1 - Zerbst, Uwe T1 - Application of Fracture Mechanics to welds with crack origin at the weld toe - a Review - Part 1: Consequences of inhomogeneous microstructure for materials testing and failure assessment T2 - Welding in the world N2 - The two-part paper provides an overview on the state-of-the-art in the application of engineering fracture mechanics to weldments. This, of course, cannot be exhaustive but is limited to butt and fillet welds with crack initiation at weld toes. In the present first pari, the authors briefly focus on the susceptibility of welds to cracks and other defects. Following this, they discuss in more detail the consequences of material inhomogeneity across the weld for fracture mechanics. Inhomogeneity causes scatter in fracture toughness and strength mis-match effects which both have to be considered in fracture toughness testing, crack driving force determination and fracture assessment of welded components. Part 2 of the paper series will add a discussion of welding residual stresses and questions of applying fracture mechanics to residual as well as total lifetime estimation of welds under cyclic loading. PB - Springer KW - Fracture toughness KW - Crack driving force KW - Material inhomogeneity KW - Strength mis-match PY - 2019 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/48755 AN - OPUS4-48755 SN - 0043-2288 VL - 63 IS - 6 SP - 1715 EP - 1732 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany