HARDNESS TESTING APPARATUS AND HARDNESS TESTING METHOD

摘要

A hardness tester includes a correlation memory storing correlation data which associates hardness of a standard reference sample based on dimensions of an indentation formed by pressing an indenter into a surface of the standard reference sample, and hardness of the standard reference sample based on test force and depression amount during formation of the indentation in the standard reference sample. A CPU measures the test force and depression amount during formation of the indentation in a measured sample; calculates an estimated value of the hardness of the measured sample based on the measured test force and depression amount; and calculates the hardness of the measured sample based on the calculated estimated value and the correlation data.

主权项

1. A hardness tester for loading a predetermined test force on an indenter and pressing the indenter into a surface of a sample to form an indentation, the hardness tester comprising:
a memory configured to store correlation data which associates hardness of a standard reference sample based on dimensions of the indentation formed by pressing the indenter into the surface of the standard reference sample, and hardness of the standard reference sample based on the test force and depression amount during formation of the indentation in the standard reference sample; a measurer configured to measure the test force and depression amount during formation of the indentation in a measured sample; an estimated value calculator configured to calculate an estimated value of the hardness of the measured sample based on the test force and depression amount measured by the measurer; and a hardness calculator configured to calculate the hardness of the measured sample based on the estimated value calculated by the estimated value calculator and the correlation data.