Assessment of damage in structural steels by the parameters of scatter of hardness characteristics in loaded and unloaded states

被引：0

作者：

A. A. Lebedev

V. P. Shvets

机构：

[1] National Academy of Sciences of Ukraine,Pisarenko Institute of Problems of Strength

来源：

Strength of Materials | 2008年 / 40卷

关键词：

structural steels; flat specimen; hardness; scatter of properties; homogeneity coefficient; stress; strain; unloading; sensitivity to stress level in material;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The authors discuss new experimental data on hardness of structural steels 25, 45, and 0N9, which were obtained for flat specimens subjected simultaneously to uniaxial tension, including the cases of intermittent unloading at various levels of residual strain. Based on numerous measurements (up to 30), mean values of hardness and their Gumbel scatter parameters have been determined for specimens in the loaded and unloaded states. The paper substantiates the procedure of determination of indices of sensitivity of measured hardness values and their scatter to loading conditions, which make it possible to refine the hardness characteristics as measured during technical diagnostics of equipment in operation.

引用

页码：302 / 307

页数：5