Method of non-destructive control of the solvent diffusion coefficient in products made from anisotropic porous materials

Abstract

The development of methods and means of non-destructive products testing in various industries is an actual task. The subject of this study is non-destructive testing of the solvents mass transfer processes in products made from anisotropic porous materials (PM) and the diffusion coefficient determination. The known methods for determining the diffusion coefficient in anisotropic porous media are developed for canonical forms. This leads to the necessity of destroying products for making experimental samples from them of a given configuration and size. The purpose of this study is to develop a dynamic method that allows us quickly determine the diffusion coefficient in products from anisotropic porous materials without destroying them. The method is designed to investigate the diffusion coefficient of solvents, for example, in reinforced building elements from materials having a porous structure. The task of constructing the method mathematical model is solved. The influence of the design and operating measuring device parameters on the accuracy of the determining diffusion coefficient is studied. A theoretical estimate of the error in the measurement result was made. The results of the method application are presented.