METHOD FOR DETERMINING OR MONITORING DEGREE OF HARDENING OF ARTICLE MADE FROM COMPOSITE MATERIAL BASED ON ELECTROCONDUCTIVE REINFORCEMENT OR ELECTROCONDUCTIVE FILLER AND THERMOSETTING POLYMER Russian patent published in 2024 - IPC G01N27/02 B29C35/02 G01N33/44 

FIELD: measuring.

SUBSTANCE: invention relates to a method for determining or continuous monitoring of the degree of hardening of articles made from composite materials, composition of which contains at least electroconductive reinforcement or electroconductive filler and thermosetting polymer (carbon plastics, composite material based on fibreglass laminate and aluminium layers (GLARE), composite materials with metal fibres, etc. Disclosed is a method of determining or monitoring the degree of hardening of an article made from a composite material, the composition of which contains at least an electrically conductive reinforcement or an electrically conductive filler and a thermosetting polymer, which includes the following steps: measuring, in the process of making said article, changes in the electromagnetic properties of said article; determination of hardening degree of said article proceeding from comparison of measured electromagnetic properties of said article and reference data of dependence of electromagnetic properties on degree of hardening of material of said article. Method can be used to optimize the production process, both autoclave and non-autoclave, by creating feedbacks for heating systems and real-time correction of the temperature mode in order to reduce time and energy costs.

EFFECT: providing a method of monitoring the degree of hardening, which, depending on the formulation of the problem, is carried out as quantitative, non-destructive, continuous, for monitoring hardening in real time directly on a material or an article, at one point or several points simultaneously.

18 cl, 6 dwg