About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
Presentation Title |
A Multiphysics Model of Synergistic Environmental Exposure Assisted Damage of Composite Using Homogenization-based Degradation Variables |
Author(s) |
Zhiye Li, Michael Lepech |
On-Site Speaker (Planned) |
Zhiye Li |
Abstract Scope |
Glass Fiber-reinforced polymer composites (GFRPs) are made by combining polymer with reinforcement glass fiber yarns to produce lightweight yet strong materials. This study is to build a physics-based model to predict the synergistic effect of environmental exposure to damage of the composite.
Based on the authors’ previous UV/ moisture exposure experiment-computational study, this extended study couples degradation induced material weakening to the continuum damage model. Results of this study indicate that the synergistic effect of combined UV and moisture exposure on composite material degradation is more severe than simple linear superposition of each exposure’s damage. Comparisons and analysis of UV and moisture exposure degradation mechanisms indicate that these environmental exposures caused material degradation by weakening the polymer matrix, along with weakening the interface between the polymer matrix and fiber reinforcing yarns. Moreover, interface degradation is more critical than the former one. |
Proceedings Inclusion? |
Planned: |