DEVICE FOR MONITORING STRESS IN MONOLITHIC POLYMER MATERIAL Russian patent published in 2020 - IPC G01L1/16 G01N33/44 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measurement equipment, in particular to monolithic polymer material stress control means, and can be used in determining the physical and mechanical state of monolithic polymer material having a piezoelectric effect and used, for example, for glazing buildings, structures, vehicles, etc. Device for controlling stresses in monolithic polymer material comprises a deformation sensor, further comprises a signal pre-processing unit, the output of which is connected to the input of a signal amplifier, the output of which is connected to the input of the first analogue-to-digital converter, output of which is connected to first input of information processing unit, two electrodes of conductive material, to each of which are connected by one conductor, other end of each of conductors is connected to first and second inputs of voltage amplifier, output of which is connected to input of second analogue-to-digital converter, which output is connected to first input of information processing unit, which output is connected to information display unit, wherein input of preliminary processing unit is connected to deformation sensor output.

EFFECT: control over changes in material structure due to simultaneous measurement of piezoelectric response and mechanical deformation of monolithic polymer material on external mechanical action.

1 cl, 5 dwg