Selection process, modified impact testing and failure analysis of an electron-beam-melted Ti-6Al-4V 3D tessellation based on the Eulerian path of the first stellation of the rhombic dodecahedron open unit cell

Hugo Francisco Lopez Lopez de Cardenas, University of Texas at El Paso

Abstract

Ti-6Al-4V lattice block structures manufactured through the electron beam melting (EBM) process are a promising field in design and research due to great advantages that the alloy, the process and the final product offer. Three lattice block structures were manufactured through the electron beam process using an ARCAM A2 machine. The structures were designed using the MATERIALIZE™ software and were designed around different types of unit cells. Compression testing was performed and one unit cell was selected due to its anisotropic behavior for modified impact testing. The same unit cell was used and it was scaled up to add a total of five LBS with different densities while maintaining their truss cross-sectional area. Absorbed impact energy was monitored and a relationship was determined. Finally, a failure analysis comprised of stereomicroscopy, scanning electron microscopy (SEM) and energy dispersive x-ray spectrometry (EDS) was performed to better understand the fracture mechanisms involved on impact testing. ^

Subject Area

Engineering, Metallurgy|Engineering, Materials Science

Recommended Citation

Lopez de Cardenas, Hugo Francisco Lopez, "Selection process, modified impact testing and failure analysis of an electron-beam-melted Ti-6Al-4V 3D tessellation based on the Eulerian path of the first stellation of the rhombic dodecahedron open unit cell" (2010). ETD Collection for University of Texas, El Paso. AAI1477836.
http://digitalcommons.utep.edu/dissertations/AAI1477836

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