DEVELOPMENT OF THE METHOD OF NONDESTRUCTIVE CONTROL OF THE DIFFUSION COEFFICIENT IN MASSIVE PRODUCTS FROM POROUS MATERIALS

Consideration is given to the modernization of a pulse method of nondestructive control of the diff usion coeffi cient with the aim of improving the accuracy of its use to investigate massive products from porous materials. The method makes it unnecessary to precalibrate the used diff usant-concentration meter and ensures a rise in the accuracy of determining the sought diff usion coeffi cient due to the possibility to select measured parameters involved in a calculation expression on portions of the static characteristic of the sensor with high sensitivity and antijamming capability. Technical implementation of the method with a data-measuring system is considered.
   
Author:  V. P. Belyaev, A. G. Divin, and P. S. Belyaev
Keywords:  nondestructive control, massive product, porous material, diff usion coeffi cient, data-measuring system
Page:  277