The strength of seminatural cast iron specimens with different in-homogeneous lauyers to cyclic loading

Abstract

The report analyzes the effect of the in-homogeneity derivatives on the cyclic strength of spheroid cast iron. There are compared the results of an experimental analytical study of spheroid cast iron seminatural specimens with different in-homogeneities layers. Experimental testing was carried out by using the program loading, when the number of cycles under pure bending exceeds 10'8 and had begun form the real structures working conditions. The study was extended with fracture analysis produced by SEM which had allowed the clarifying of the degradation process patterns.