Micro-hardness measurement method and micro-hardness meter

Details Micro-hardness measurement method and micro-hardness meter Micro-hardness measurement method and micro-hardness meter

2008-09-16

2008-09-16

Rogers, David A. (Department: 2856)

Measuring and testing

Hardness

By penetrator or indentor

C073S082000, C702S155000, C702S166000

Reexamination Certificate

active

11640913

ABSTRACT:
A micro-hardness measurement method for calculating the hardness of a test sample by pushing an indenter in the test sample and forming an indentation thereon, including: a loading step for extracting load data showing the relationship between load L applied to the indenter and a depth δ to which the indenter is pushed in from the surface of the test sample; an unloading step of extracting unloading data showing the relationship between the load L applied to the indenter after the load is unloaded and the depth δ; a first step of judging, by comparing the unloading data with the load data, the load fluctuation amount from the maximum depth δ0when unloading the load; and a second step of judging the load at the depth δ1(δ1<δ0) when unloading the load or the load fluctuation amount in the vicinity of the depth δ1.

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