About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Natural Fibers and Biocomposites
|
| Presentation Title |
Compression Molding versus Vacuum Lamination: Effects on Gamma-Ray Shielding of Hybrid Composite Laminates |
| Author(s) |
Thomaz Jacintho Lopes, Sergio Neves Monteiro, Rudnei Karam Morales, Jose Marques Lopes, Paulo Cezar Rocha Silveira |
| On-Site Speaker (Planned) |
Thomaz Jacintho Lopes |
| Abstract Scope |
Manufacturing route plays a critical role in determining the microstructure and functional performance of fiber-reinforced polymer composites. This study evaluates the influence of compression molding and vacuum-assisted lamination on the gamma-ray shielding performance of hybrid flax/aramid–epoxy laminates. Composite plates with a 2A/2L stacking sequence were fabricated under controlled conditions and tested using Am-241 (59.5 keV) and Cs-137 (661.7 keV) gamma-ray sources. Shielding efficiency was assessed through the transmission factor (TF) and mass attenuation coefficient (μ/ρ). Vacuum-assisted lamination significantly enhanced shielding performance, increasing μ/ρ from 0.062 to 0.101 cm²/g while reducing TF from 93.66% to 90.10% compared with compression molding. These results demonstrate that the manufacturing route strongly affects gamma-ray attenuation and should be considered a key parameter in designing lightweight multifunctional hybrid composites for structural applications requiring effective radiation shielding. |
| Proceedings Inclusion? |
Planned: |