|
·
An
important non-destructive test is the Hardness test. In this an indenter
is pushed into the sample by a known load and the permanent plastic deformation
produced is measured.
· The
geometry and material of the indenter is defined, and a relative hardness
is defined in terms of the indentation depth.
· The
value of this measurement is also its correlation with the tensile
strength of the material.
· For
the Rockwell hardness tester shown, either a diamond cone (C-scale) or
a steel sphere (B-scale) is used for indentation. |
|
|
