1 April 2014 Rate-dependent extensional "dynamic ligaments" using shear thickening fluids
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Abstract
A novel “dynamic ligament” smart material that exhibits a strongly rate-dependent response in extension is developed and characterized. The devices, based on elastomeric polymers and shear thickening fluids, exhibit low resistance to extension at rates below 10 mm/s, but when stretched at 100 mm/s or higher resist with up to 7 × higher force. A link between the shear thickening fluid’s rheology and the dynamic ligament’s tensile performance is presented to explain the rate-dependent response. Future recommendations for improving device performance are presented, along with a host of different potential application areas including safety equipment, adaptive braces, sporting goods, and military equipment.
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Paul T. Nenno, Paul T. Nenno, Eric D. Wetzel, Eric D. Wetzel, } "Rate-dependent extensional "dynamic ligaments" using shear thickening fluids", Proc. SPIE 9057, Active and Passive Smart Structures and Integrated Systems 2014, 90573H (1 April 2014); doi: 10.1117/12.2059833; https://doi.org/10.1117/12.2059833
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