Influence of structure and mechanical properties for cyclic fracture rates of cast iron

Abstract

This paper presents the study and perform analy-sis of additional research by measuring limits of cracking threshold at very low speeds (5·10-12 m /cycle). The micro-structure and mechanical properties of cast iron make big influence on crack propagation. Big dispersal of experi-mental research data unstable propagation of the crack was noticed. The obtained data were used for the calculation of durability of structural elements.