| 摘要 |
<p>The device of the invention is intended for measuring a loading force and a friction force in a tribological system. The device includes an assembly of two deformation sensitive sensors (200, 300) for simultaneous equal deformation in two opposite directions for eliminating misbalance created in the measurement system (100) when a single sensor is used. Each sensor (200, 300) comprises a deformable beam (212, 312) having through longitudinal slots (218, 220) extending in different and non-parallel directions and overlapped within the body of the beam (212, 312). Each sensor (200, 300) deforms in one direction under the effect of a loading force beam in another direction under the effect of a friction force measured by another two pairs of strain gauges (R1-2 and R3-2) located on opposite sides of the beam (212, 312) near the other end of the beam (212, 312). Two aforementioned sensors (200, 300) are sandwiched between two plates (102, 104) in diagonally symmetrical positions, so as to transmit forces between both plates (102, 104) and at the same time to ensure limited freedom of movement between both plates (102, 104) to allow deformations caused by the applied forces. One plate (102) is attached to the loading unit of the tribological system and another (104) supports an upper sample for engagement with the lower sample of the system.</p> |
