TY - GEN
T1 - Study of shear-stiffened elastomers
AU - Tian, Tongfei
AU - Li, Weihua
AU - Ding, Jie
AU - Alici, Gursel
AU - Du, Haiping
PY - 2013
Y1 - 2013
N2 - Shear thickening fluids, which are usually concentrated colloidal suspensions composed of non-aggregating solid particles suspended in fluids, exhibit a marked increase in viscosity beyond a critical shear rate. This increased viscosity is seen as being both 'field-activated', due to the dependence on shearing rate, as well as reversible. Shear thickening fluids have found good applications as protection materials, such as in liquid body armor, vibration absorber or dampers. This research aims to expand the protection material family by developing a novel solid status shear thickening material, called shear-stiffened elastomers. These new shear-stiffened elastomers were fabricated with the mixture of silicone rubber and silicone oil. A total of four SSE samples were fabricated in this study. Their mechanical and rheological properties under both steady-state and dynamic loading conditions were tested with a parallel-plate. The effects of silicone oil composition and angular frequency were summarized. When raising the angular frequency in dynamic shear test, the storage modulus of conventional silicone rubber shows a small increasing trend with the frequency. However, if silicone oil is selected to be mixed with silicone rubber, the storage modulus increases dramatically when the frequency and strain are both beyond the critical values.
AB - Shear thickening fluids, which are usually concentrated colloidal suspensions composed of non-aggregating solid particles suspended in fluids, exhibit a marked increase in viscosity beyond a critical shear rate. This increased viscosity is seen as being both 'field-activated', due to the dependence on shearing rate, as well as reversible. Shear thickening fluids have found good applications as protection materials, such as in liquid body armor, vibration absorber or dampers. This research aims to expand the protection material family by developing a novel solid status shear thickening material, called shear-stiffened elastomers. These new shear-stiffened elastomers were fabricated with the mixture of silicone rubber and silicone oil. A total of four SSE samples were fabricated in this study. Their mechanical and rheological properties under both steady-state and dynamic loading conditions were tested with a parallel-plate. The effects of silicone oil composition and angular frequency were summarized. When raising the angular frequency in dynamic shear test, the storage modulus of conventional silicone rubber shows a small increasing trend with the frequency. However, if silicone oil is selected to be mixed with silicone rubber, the storage modulus increases dramatically when the frequency and strain are both beyond the critical values.
KW - Shear thickening
KW - elastomer
KW - shear-stiffened
UR - http://www.scopus.com/inward/record.url?scp=84880723732&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84880723732&partnerID=8YFLogxK
U2 - 10.1063/1.4811885
DO - 10.1063/1.4811885
M3 - Conference contribution
AN - SCOPUS:84880723732
SN - 9780735411661
T3 - AIP Conference Proceedings
SP - 133
EP - 136
BT - Powders and Grains 2013 - Proceedings of the 7th International Conference on Micromechanics of Granular Media
T2 - 7th International Conference on Micromechanics of Granular Media: Powders and Grains 2013
Y2 - 8 July 2013 through 12 July 2013
ER -