RT Journal Article
SR Electronic
A1 Klopanová, Veronika
A1 Novák, Viktor
A1 Kvasnová, Petra
A1 Novák, Daniel
T1 Theoretical Basis of Fractographic Methods and Their Application in Fracture Modelling for Cr-Ni Steels
JF Manufacturing Technology Journal
YR 2017
VO 17
IS 6
SP 869
OP 876
DO 10.21062/ujep/x.2017/a/1213-2489/MT/17/6/869
UL https://journalmt.com/artkey/mft-201706-0009.php
AB Fractographic methods derive their knowledge from Euclidean geometry, set theory, metric theory and chaos theory. In engineering technology, the fractography is primarily used for modeling of fatigue and intergranular fractures. As such defects are not smooth due the principle of their origin, they cannot be described using ordinary mathematical tools. However, if the conditions of self-similarity are met, fractal geometry means can describe various irregular, incomprehensible, crooked or fragmented geometric shapes. Fractographic description of the fracture profile allows more accurate quantification of fractures and it also enables identifying possible causes of their initiation. This study contains several examples of specific cases of Cr-Ni steel failures and a basic explanation of their fractographic description.