Available Technology

True Shear Parallel Plate Viscometer

Patent Abstract: 
Viscosity is measured using two parallel plates made of transparent quartz with a precisely measured and known gap between them. The material being tested is placed in the gap and the lower plate applies a lateral shear force to the test material. The plates can be designed with integrated heating elements and sensors to allow for the test material to be rapidly heated to a specific temperature. This NASA innovation replaces the need for using large furnaces that do not heat the material rapidly enough causing some materials, such as glass, to crystallize before a viscosity can be measured. By using small heating elements instead of indirect heat from a furnace, this device could prove to be more cost efficient by allowing for fewer mistakes due to premature crystallization and because there will not be a furnace for purchase or repair.
Benefits: 
applications: 
Patent Number: 
8,490,470
Internal Laboratory Ref #: 
MSFC-QL-0047
Patent Status: 
2031-12-04
Patent Issue Date: 
January 1, 1970
Agency
NASA
Region
Southeast
State: 
Alabama
Phone: 
256-544-9151
Email: 
terry.taylor@nasa.gov
Lab Representatives
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