Budowa granicznych krzywych zniszczenia w oparciu o koncepcję parametru uszkodzenia

A possibility to employ Kachanov's damage parameter [5] in constructing isochronous failure limit curves in creep conditions is evaluated. A scalar and vector representation of damages are verified to be used in revealing a phenomenon of changing a shape of these curves with time to rupture. It is shown that in this case it is necessary to use an extended law of damage kinetics containing a term responsible for time independent deterioration. The results are better when vector representation of damages has been used, however further improvements to fit more accurately experimental results are necessary.