| 摘要 |
PROBLEM TO BE SOLVED: To provide a hardness tester capable of accurately detecting a point where an indenter is in contact with a sample in the instrumented indentation testing.SOLUTION: In a hardness tester 100, an anticipated range of value of displacement, speed or acceleration of an indenter 3 in an approaching process to a sample S is set before measurement start, and the value of displacement, speed or acceleration of the indenter 3 in an approaching process to the sample S is measured after the measurement start, and when a measured value is not within the anticipated range, detection mistake of a zero point is determined. |
