METHOD OF RESIDUAL STRESS DETERMINING USING INSTRUMENTAL INDENTATION, DATA MEDIUM WITH THE CORRESPONDING SOFTWARE AND INSTRUMENTAL INDENTATION DEVICE, INTENDED FOR INSTRUMENTAL INDENTATION IMPLEMENTATION USING DATA MEDIUM Russian patent published in 2017 - IPC G01N3/08 G01N3/40 

FIELD: electrical engineering.

SUBSTANCE: invention relates to residual voltage determination by way of instrumental indentation. Summary: performing application to sample of single-axis stress, biaxial stress and stress, which is identical in all directions, and then performing instrumental indentation using indenter, calculation of indenter indentation maximum depth in sample non-stressed state by insertion into formula for indenter indentation maximum depth calculation in non-stressed state of contact actual depth in non-stressed state, obtained from indenter contact actual depth , and indenter indentation maximum depth and indenter footprint resultant depth at application of maximum indenting force L₀, found from dependence of indenter indention depth on indenting force, produced by instrumentation indentation, obtaining indenter indentation depth on indenting force in non-stressed state dependence curve by substitution of said method calculated indenter indention maximum depth in sample non-stressed state into formula, connecting indenter indentation depth and indenting force, and calculating difference ΔL of forces between force L₁, corresponding to indenter indentation maximum depth on indenter indentation depth on indenting force in non-stressed state dependence curve, and maximum indenting force L₀, and calculation of residual stress in sample by substitution of calculated forces difference ΔL into residual stress calculation formula.

EFFECT: technical result is possibility to determine residual stress in sample even in absence of state without residual stress.

11 cl, 27 dwg