|About this Abstract
||MS&T23: Materials Science & Technology
||Additive Manufacturing: Design, Materials, Manufacturing, Challenges and Applications
||Additive Manufacturing of Graded Tungsten Lattices for Radioactive Material Transport
||Caleb Hatler, Zachary Persha, Jason Benkoski, Dan Thoma
|On-Site Speaker (Planned)
Additive manufacturing (AM) potentially transcends traditional manufacturing techniques with the ability to create parts with fine detail, especially for internal or encased geometries. In this study, a Type-A radiation transport device with structurally supported gradients between plates is made from an AM tungsten (W) lattice with a polyurethane (PUR) back-fill. Testing graded lattices of W with the PUR back-fill was conducted to meet IAEA SSR-6 specifications. Experimental trials guided by dimensional analyses were performed to establish process parameters for manufacturing scale-up. Testing was done to compare the tensile strength, compression, impact testing, and thermal transport of two lattice geometries, octet and rhombic dodecahedral. Each lattice featured either uniform density or linearly varied density, with further variation in unit cell size. Results of testing, selection of final part, and insights into how current manufacturing limitations impact design will be presented.