Informativeness Improvement of Hardness Test Methods for Metal Product Assessment

4th International Conference on Modern Technologies for Non-Destructive Testing

材料科学;物理学

Osipov, S.^1 ; Podshivalov, I.^2 ; Osipov, O.^1 ; Zhantybaev, A.^1

National Research Tomsk Polytechnic University, Tomsk, Russia^1

Tomsk State University of Architecture and Building, Tomsk, Russia^2

关键词: Average values;    Correlation analysis;    Hardness values;    Informative ness;    Mean square deviation;    Metal products;    Metal surfaces;    Test samples;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/132/1/012002/pdf
DOI  :  10.1088/1757-899X/132/1/012002

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The paper presents a combination of theoretical suggestions, results, and observations allowing to improve the informativeness of hardness testing process in solving problems of metal product assessment while in operation. The hardness value of metal surface obtained by a single measurement is considered to be random. Various measures of location and scattering of the random variable were experimentally estimated for a number of test samples using the correlation analysis, and their close interaction was studied. It was stated that in metal assessment, the main informative characteristics of hardness testing process are its average value and mean-square deviation for measures of location and scattering, respectively.