Investigation of the influence of chemical composition on the results of acoustic measurements of the strength properties of materials

Abstract

A combined effect of four factors: the percentage of carbon, chromium, silicon and manganese on the value of the resonant frequency of the samples of steel 40X. The solution to this problem is made difficult by the fact that the factors which influence investigated, can give the effect of interrelated and therefore each pair of dependencies will be complicated. To estimate used multiple regression methods. Found that fluctuations in the chemical composition within the material does not have a brand value by determining changes in the resonance frequency and determines the mechanical properties of materials as compared with errors of reproducibility and spread inside parallel determinations.