The present disclosure provides a low-cost and accurate rheometer system and method capable of determining melt flow rheological properties of polymers, such as from Fused Filament Fabrication (“FFF”) polymeric materials. The device can include a filament feeding system, liquefier for filament melting, force transducer for measuring filament feeding force, and a temperature control system for controlling polymer melt temperatures. An electronic control system can capture data and manage operations. The system can measure a filament velocity and filament force required to extrude the FFF filament for printing. The filament velocity and force data can be used to compute data sets of melt volumetric flow relative to pressure drop across a FFF nozzle. An inverse analysis process transforms the computed data sets through nonlinear curve fitting to determine rheological parameters, independent of the customary calculation of apparent viscosity from shear stress and strain rate, that can assist in controlling the filament deposition.

The present disclosure provides a system for the measurement of rheological properties of a fluid including a computing device including memory, one or more processors, and software executable by the one or more processors, configured to accept input parameters including a fluid density and the fluid viscometer drain time; and subsequently output one or more values corresponding to one or more rotations per minute (RPM) dial readings (and in centipoise) of a conventional rheometer. In embodiments, the input parameters may be limited to, or consist of, fluid density and fluid viscometer drain time. In embodiments, the system may output and display six values corresponding to the six RPM dial readings (and in centipoise) of a conventional rheometer corresponding to 600 RPM, 300 RPM, 200 RPM, 100 RPM, 6 RPM, and 3 RPM.

The present disclosure provides a system for the measurement of rheological properties of a fluid including a computing device including memory, one or more processors, and software executable by the one or more processors, configured to accept input parameters including a fluid density and the fluid viscometer drain time; and subsequently output one or more values corresponding to one or more rotations per minute (RPM) dial readings (and in centipoise) of a conventional rheometer. In embodiments, the input parameters may be limited to, or consist of, fluid density and fluid viscometer drain time. In embodiments, the system may output and display six values corresponding to the six RPM dial readings (and in centipoise) of a conventional rheometer corresponding to 600 RPM, 300 RPM, 200 RPM, 100 RPM, 6 RPM, and 3 RPM.

The present disclosure provides a viscometer for measuring rheological properties of a fluid, based on the fluid level decreasing at a constant rate during efflux, including a vessel with a three dimensional shape defined by the following proportionality

[00001]$x\propto C\times y^{\left(\frac{1}{n}\right)}$

wherein, the symbol ∝ refers to a proportionality, and the variables x and y are coordinates on an x-y cartesian coordinate plane, where x is length and y is height; and n is a variable exponential term between and including 2 and 4; and C is a constant with dimensions of length; and where the vessel comprises a hole at or near the y-coordinate minimum.

This disclosure provides a system for measuring rheological properties of a fluid including a vessel with a shape defined by the following proportionality: x∝C ×y {circumflex over ( )}((1/n)) wherein the symbol ∝ refers to proportionality, and the variables x and y are coordinates on an x-y cartesian coordinate plane, where x is length and y is height; 2≤n≤4; and C is a constant with dimensions of length, and the vessel includes a hole at or near the y-coordinate minimum; a temperature sensor and a pressure sensor wherein the temperature sensor and pressure sensor are configured to transmit temperature and pressure information to a mobile display device, tablet, or computer, the mobile display device, tablet, or computer comprising memory and a processor and a software application configured to perform processing operations including accepting two input numerical values including density and viscosity measured by the vessel and outputting industry standard dial readings of a conventional rotational rheometer.

A bracket, a thrombelastography device, and a support system are disclosed. The bracket comprises: a fixed support part (101), a movable support part (102), and a connection part (103). The connection part comprises a first fixing connection member (1031) and a second fixing connection member (1032). The first fixing connection member is fixedly connected to the fixed support part; the second fixing connection member is fixedly connected to the movable support part; the first fixing connection member is connected to the second fixing connection member in point contact fashion, such that the first fixing connection member and the second fixing connection member can rotate relative to each other; the movable support part is fixedly connected to a supported object; when driven by the supported object, the movable support part rotates relative to the fixed support part by means of the point contact between the first fixing connection member and the second fixing connection member. The thrombelastography device comprises a rotational shaft and a bracket. The rotational resistance to the supported object when it rotates can be reduced.

A bracket, a thrombelastography device, and a support system are disclosed. The bracket comprises: a fixed support part (101), a movable support part (102), and a connection part (103). The connection part comprises a first fixing connection member (1031) and a second fixing connection member (1032). The first fixing connection member is fixedly connected to the fixed support part; the second fixing connection member is fixedly connected to the movable support part; the first fixing connection member is connected to the second fixing connection member in point contact fashion, such that the first fixing connection member and the second fixing connection member can rotate relative to each other; the movable support part is fixedly connected to a supported object; when driven by the supported object, the movable support part rotates relative to the fixed support part by means of the point contact between the first fixing connection member and the second fixing connection member. The thrombelastography device comprises a rotational shaft and a bracket. The rotational resistance to the supported object when it rotates can be reduced.

To further reduce calculation load in flow analysis of a fluid in a cavity. Provided is an information processing device including: a division unit configured to divide a cavity in which a fluid flows into a plurality of infinitesimal elements; an adjustment unit configured to adjust an equation expressing a conservation law of a physical quantity related to the fluid, on a basis of distribution of a thickness of the cavity; and an analysis unit configured to calculate flow velocity for each of the infinitesimal elements by using the equation adjusted by the adjustment unit.

To further reduce calculation load in flow analysis of a fluid in a cavity. Provided is an information processing device including: a division unit configured to divide a cavity in which a fluid flows into a plurality of infinitesimal elements; an adjustment unit configured to adjust an equation expressing a conservation law of a physical quantity related to the fluid, on a basis of distribution of a thickness of the cavity; and an analysis unit configured to calculate flow velocity for each of the infinitesimal elements by using the equation adjusted by the adjustment unit.

An apparatus for simulating fluid loss through diverging fracture fronts includes a housing including an inlet and an outlet. The housing defines an inner volume. The housing can receive and sealingly retain fluid in the inner volume. The housing includes a plate defining an opening formed in an axial surface of the plate. The opening spans a longitudinal thickness of the plate and diverges in dimension along the longitudinal thickness of the plate. The plate is sealingly positioned within the inner volume of the housing between the inlet and the outlet to permit fluid flow from the inlet to the outlet through the opening and to prevent the fluid flow past a circumferential surface of the plate. The apparatus includes a fluidic pressure source fluidically coupled to the housing and configured to flow the fluid through the housing.