Multi-damage life assessment under continuous damage mechanics
| Autor: | Chaojie Qi, Yufeng Sun |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Engineering
Artificial neural network business.industry 02 engineering and technology Structural engineering 010501 environmental sciences 021001 nanoscience & nanotechnology 01 natural sciences Service process Reliability engineering Superposition principle Brittleness Creep Life assessment Damage mechanics Material failure theory 0210 nano-technology business 0105 earth and related environmental sciences |
| Zdroj: | 2016 Prognostics and System Health Management Conference (PHM-Chengdu). |
| DOI: | 10.1109/phm.2016.7819925 |
| Popis: | Materials in the service process will produce multi-damage, such as brittle damage, creep damage and fatigue damage. Traditional linear superposition principle, considering that different kinds of damages are independent, is not always accurate. In order to evaluate reliability of the material life under the multi-damage, a new method is presented in the paper. The method is based on continuous damage mechanics(CDM) framework, considering effects on grain size and void damage, proposing creep and fatigue continuous damage model. Then the BP neural network is constructed to train creep-fatigue damage and finally validated the rationality of the model. The method can accurately evaluate the reliability life, which provides a new way to study multi-damage of the material failure behavior under CDM framework based on BP neural network. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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