Apparatus for calibrating hardness tester, method for calibrating the same and apparatus for evaluating dynamic characteristic of specimen

摘要

A method for calibrating an apparatus for calibrating a hardness tester, the method comprising the steps of: setting a plurality of calibration points between a rated force point at which a rated force of a force measuring member is applied and a zero point at which no-load is applied, for measuring outputs(mV/V) from the force measuring member according to test forces(N) applied to the force measuring member; and calculating a relation between the test forces(N) and the outputs(mV/V) as an approximation based on the test forces(N) and the outputs(mV/V) according to the test forces(N) at the calibration points. An apparatus for evaluating a dynamic characteristic of a specimen, which installed in a hardness tester, the apparatus comprising: a force measuring member (12); a force transmitting portion (14) which is movable up and down; a distance measuring member (13) incorporated in the force transmitting portion (14) to be contacted with the force measuring member (12) from above; and an indenter.