Rate-dependent extensional "dynamic ligaments" using shear thickening fluids

Paul T. Nenno; Eric D. Wetzel

doi:10.1117/12.2059833

1 April 2014 Rate-dependent extensional "dynamic ligaments" using shear thickening fluids

Paul T. Nenno, Eric D. Wetzel

Proceedings Volume 9057, Active and Passive Smart Structures and Integrated Systems 2014; 90573H (2014) https://doi.org/10.1117/12.2059833
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2014, San Diego, California, United States

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.

Citation Download Citation

Paul T. Nenno and 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); https://doi.org/10.1117/12.2059833

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