Affiliation:
1. School of Civil and Architecture, Zhejiang Sci-Tech University, Hangzhou 310018, China
2. School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110180, China
Abstract
This paper examines the behavior at high strain rates of a shear-thickening fluid (STF) impregnated glass fiber-reinforced polymer (GFRP) fabric using a split Hopkinson pressure bar (SHPB). This study involved impact testing of 4 GFRP specimens and 20 GFRP-STF composite specimens at four different strain rates. The STF employed in this study was synthesized by incorporating 20.0 wt.% of 12 nm silica in polyethylene glycol. Rheological tests indicated that the STF exhibited a noticeable shear-thickening effect, with viscosity surging from 3.0 Pa·s to 79.9 Pa·s. The GFRP-STF specimen demonstrated greater energy absorption capacity, deformation ability, and toughness, bearing higher and faster impact loads than neat GFRP. Specifically, the GFRP-STF specimen showed a 21.8% increase in peak stress and a 92.9% rise in energy absorption capacity under high-strain-rate loading. Notably, the stress–strain curve of the GFRP-STF specimen exhibited a distinct yield stage, while the energy absorption curve displayed no significant descending stage features.
Funder
National Natural Science Foundation of China
Liaoning Revitalization Talents Program
Natural Science Foundation of Zhejiang Province
Subject
Engineering (miscellaneous),Ceramics and Composites
Cited by
1 articles.
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