302 831 8079 wagnernj@udel.edu

Erin Hogan

B.S. Chemical Engineering, Class of 2021

University of Delaware

Newark, DE

 

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Email: ehogan@udel.edu

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Puncture Resistance of EVA Suits Due to Intercalated STF-Armor™

Through intercalating the thermal micrometeoroid garment (TMG) of extra-vehicular activity (EVA) suits with a colloidal shear thickening fluid (STF-Armor™), the EVA suits become more puncture and cut resistant to small micrometeoroid and orbital debris (MMOD) as well as the craters formed on materials from MMOD impact. Upon impact, the STF-Armor™ exceeds its critical stress limit causing the material it is intercalated with becomes rigid; once the stress is removed, the material returns to its liquid-like, flexible properties. Through analysis and testing, samples have shown to decrease the weight and thickness of the TMG lay-up, maintain comparable flexibility, and greatly increase the energy absorbed in tested impacts.

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