Fracture toughness of heterogeneous energy componentsPraunseis, Zdravko (Avtor) fracture toughnessenergy materialsexperimental testingThe presence of different microstructures along pre-crack fatigue fronts has important effects on the critical crack tip opening displacement (CTOD). This value is the relevant parameter for the safe servicing of energy components (penstocks). In the case of specimens with a through thickness notch partly in the weld metal, partly in the heat affected zone and partly in the base material, i.e. using the composite notched specimen, the fracture behaviour strongly depends on the portion of ductile base material, its size and the distribution of the mismatching factor along the vicinity of the crack front.20122015-07-10 12:32:35Delo ni kategorizirano49865UDK: 621.791:620.1OceCobissID: 243311360COBISS_ID: 1024110684ISSN pri članku: 1855-5748NUK URN: URN:SI:UM:DK:ELBQC9PKsl