| 摘要 |
A rheometer for measuring flow properties of a flowable material includes a substantially smooth measuring surface having a plurality of pressure sensors at spaced locations therein to measure pressure exerted against the measuring surface at the locations of the pressure sensors, and a rotatable surface spaced a distance from the substantially smooth measuring surface to form a sample receiving space therebetween for receiving a sample of material for which flow properties are to be measured. The substantially smooth surface may include monolithically integrated miniature pressure sensors which do not interfere with the substantially smooth surface. Pressure sensing diaphragms formed by the smooth surface deflect in response to local pressures against the surface to enable the measurement of unperturbed local pressures of materials sheared between the surfaces. The pressure sensors are sufficiently small that measured pressures are considered to be significantly local properties compared to the size of the measuring surface. |
