Rapid determination of metal strength from hardness tests

Details Rapid determination of metal strength from hardness tests Rapid determination of metal strength from hardness tests

1983-10-24

1985-07-23

Swisher, S. Clement

Measuring and testing

Hardness

By penetrator or indentor

G01N 342

Patent

active

045302359

ABSTRACT:
Means and method for making rapid determinations of the strength of metal materials from hardness evaluations of the materials. The means comprises at least two indentors for making impressions in a metal material, the indentors having predetermined dimensions. Apparatus for mechanically directing the indentors against the material are provided and mechanically connected to the indentors. The driving apparatus translates the indentors against the material under predetermined loads and in a manner that makes impressions in the material, the geometric configurations of which correspond to the configurations of the indentors. Means are provided for characterizing the respective geometries of the impressions, and means are provided for utilizing the dimensions of the indentors, the values of the applied loads, and the respective geometries, for calculating the yield and/or tensile strength of the material therefrom.

REFERENCES:
patent: 3969928 (1976-07-01), Zarka
patent: 4331026 (1982-05-01), Howard

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