Continual model of propagation of corrosion cracks for the evaluation of the service life of structures
| Autor: | O. K. Morachkovskii, Yu. V. Romashov |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Materials science
Structural material Computer simulation business.industry Mechanical Engineering Structural engineering engineering.material Condensed Matter Physics Coolant Corrosion Mechanics of Materials Service life Solid mechanics Fracture (geology) engineering General Materials Science Austenitic stainless steel business |
| Zdroj: | Materials Science. 46:254-259 |
| ISSN: | 1573-885X 1068-820X |
| DOI: | 10.1007/s11003-010-9281-5 |
| Popis: | On the basis of the mechanics of dispersed fracture, we develop a continual model of propagation of corrosion cracks for the evaluation of the service life of structural elements. The results of numerical simulation of the process of crack growth in specimens made of austenitic stainless steel of the 18-8 type performed on the basis of the experimental data available from the literature demonstrate the reliability of the proposed model. We obtain the solutions of the problem of service life of the rectilinear segments of heat-exchange pipes of steam generators of nuclear power plants and apply these solutions to establish a noticeable dependence of the service life on the size of the pipes, pressure in the primary coolant circuit, and chemical compositions of corrosive media. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|