FRACTURE AS THE RESULT OF SELF-ORGANIZED DAMAGE PROCESS

During the evaluation of mechanical testing results power type relatio nships having two parameters, are widely used. The most frequently use d laws are the following: Paris law in evaluation of fatigue crack pro pagation data, Manson-Coffin equation in LCF testing results, relation ship between the creep rate and stress at constant temperature, life t ime and stress in the case of creep or fatigue, etc. In these relation ships the material responses are characterised by two experimentally d etermined parameters. In this paper it will be pointed out that the pa rameters in each of these equations are not independents. They have a physically backgrounded correlation.