| 摘要 |
There is provided a dismountable measuring head on the test object to perform micromechanical measurements of the surface layer of said object. The measuring head is electrically connected to a separate electronic control and processing device. An axially movable carrier pipe (25) is arranged in a housing (24). A measuring shaft (1) provided with an indentor (16) is arranged astatically in the carrier pipe (25). An induction generator (2) and an induction displacement sensor (9) cooperate with the measurement shaft (1). To measure the load S the induction generator (2) is operated thereby causing the feed of the measuring shaft (1) by implemental steps, while the displacement sensor (9) measures the penetration depth y of the indentor (16) in the surface of the test object. The processing device provides, from the measurement values F and y, a limit value of the quotient F/y as a function of F for F O, as the characteristic value of the material. A stepping motor (31) connected to the carrier pipe (25) supports before the measurement the indentor (16) up to a reference position in contact with the test object surface, while a zero indicator (33) effectively connected to the measurement shaft indicates such reference position. |
