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Space Debris Impact-Resistant Structures

Space structures are exposed to a very harsh environment at Low Earth Obit (LEO), which is especially detrimental to polymeric structures because of the erosive effects of atomic oxygen (AO) in synergy with UV radiation, and the continous exposure to solar radiation. Additionally, micrometeoroids and orbital debris (MMOD) traveling at velocities exceeding 7.5 km/s can be catastrophic or initiate the conditions for accelerated AO erosion. We are investigating ways to build lightweight hybrid material systems and structures incorporating combinations of fiber and woven composites, and architected 3D-printed metals and ceramics to mitigate damage by MMOD and AO. This project involves hydrodynamic computer simulations and hypervelocity impact experiments with submillimeter-scale laser-driven flyers and simulated, millimeter-scale, MMOD that are propelled by a two-stage light gas gun to velocities exceeding 7.5 km/s.

Prospective PhD students with keen interest in the areas of impact mechanics and advanced 3D-printed materials and structures for space applications are strongly encouraged to apply. Applications will be reviewed until all positions are filled. Applicants should have some prior experience in one or more of the following:

• Mechanical experiments at low, intermediate or high projectile velocities.
• Finite Element Analysis (FEA).
• Materials characterization using high-resolution instruments, such as SEM, AFM,TEM, confocal microscopy, etc.
• 3D printing hardware and software.
• Composites processing and manufacturing.