CREEP AND DAMAGE OF RUBBERS SURROUNDED BY AGGRESSIVE MEDIA

摘要

The aim of this work is to develop theoretical and experimental procedures for modeling the behavior of rubbers.. The models will be aimed at predicting their durability based on monitoring the processes of diffusion, creep and damage. Attention is focused on specific industrial problems related to the use of band samples located in aggressive environments. The validation of models for damage evolution under the combined impact of environment, temperature and mechanical stress is a problem requiring a solution of the Flick's equation by variable diffusion coefficient and using a damage model taking into account the different areas of penetration. To solve these problems a generalization of the models ofAshby and Kachanov is required, which will lead to more complex systems of differential equations.