| About this Abstract |
| Meeting |
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
| Symposium
|
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
| Presentation Title |
A Comprehensive Study on Long-Term Durability of Protective Epoxy Coatings for Electrified Roadways |
| Author(s) |
Md Tareq Hassan, Samiul Alam, Juhyeong Lee |
| On-Site Speaker (Planned) |
Md Tareq Hassan |
| Abstract Scope |
Prior to commencing full-scale production and installation of underground wireless power transmission (WPT) systems, it is imperative to conduct comprehensive investigations to ensure their protection against environmental threats (i.e., elevated temperature, water/moisture ingression, soil corrosion, etc.). Although commonly applied in the WPT systems, epoxy materials are known to be susceptible to environmental aging, resulting from long-term hydrothermal damage from water/moisture and swelling. This study presents both experimental and numerical investigations of the effect of water diffusion on the structural performance of the epoxy protective coating. A series of water diffusion tests is performed on specimens made from commercially available two different electronics casting epoxy materials (MG Chemicals 832TC and 832FX) at room (23°C) and elevated (50°C) temperatures. Low velocity impact (LVI) tests are then conducted to evaluate residual performance of the epoxy material. A sequentially coupled, multiphysics finite element (FE) model is developed to predict long-term water diffusion induced damage in conventional epoxy materials used in WPT systems. The FE model consists of three sequentially coupled analysis steps: (1) heat transfer, (2) swelling form long-term mass diffusion, and (3) low velocity impact (LVI) analysis. DFLUX and UEXPAN subroutines are implemented to characterize surface heat flux from underlying WPT components and incremental thermal strains of the epoxy coating as a function of temperature, respectively. The numerical results show good agreement with the experimental findings, indicating that the framework can serve as a baseline for predicting epoxy coating performance on WPT systems under water environments. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |