PROCEDURE FOR DETERMINATION OF STRENGTH OF JELLOUS PRODUCTS Russian patent published in 2011 - IPC G01N3/02 

FIELD: machine building.

SUBSTANCE: rod of known area of cross section is immersed into tested gel-like product at specified depth. Obtained values of general weight of loads and rod and area of cross section of the rod or used head are used for calculation of strength of an analysed gel-like product. Liquid phase of the analysed gel-like product separated due to forced syneresis during tests is removed from a zone of indenter contact with surface of the product. As an indenter there are used special heads of various areas in form of flat disks with ratio of thickness to diametre 1:10. A grid of mutually perpendicular grooves is cut on surface of the heads from the side of contact with the tested sample. The grooves have triangle cross section of 0.2 mm depth and grid pitch 0.1 of head diametre. The design of the heads facilitates uniform distribution of loading force along area of the indenter, reduction of hydrostatic pressure of liquid phase and tangential plastic deformation of the gel-like product causing premature fracture of tested samples.

EFFECT: measurement of weak gel-like products, maximal accurate measurement of both weak and super strong gel-like products, measurement of both non-elastic and elastic gels and uniform distribution of stresses along area of their contact with tested sample.

5 cl, 2 dwg