Shear behavior of a shear thickening fluid-impregnated aramid fabrics at high shear rate

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• 作者：Wonjin Na^a ; Hyunchul Ahn^a ; Sungjin Han^a ; Philip Harrison^b ; Jong Kyoo Park^c ; Euigyung Jeong^c ; Woong-Ryeol Yu^a ; ^{woongryu@snu.ac.kr" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Aramid fibre ; Fabrics/textiles ; Mechanical properties ; Shear-thickening fluid
• 刊名：Composites Part B: Engineering
• 出版年：2016
• 出版时间：15 July 2016
• 年：2016
• 卷：97
• 期：Complete
• 页码：162-175
• 全文大小：4376 K

文摘

Shear-thickening fluid-impregnated aramid (STF-im-AR) fabrics have been manufactured for advanced soft body armor applications for which they provide improved ballistic and stab resistances. It is not yet clear whether or not such improvements can be attributed solely to the STF. In this study, the rate-dependent behavior of an STF-im-AR fabric was investigated at the fabric level, using uniaxial tensile, bias-extension, and picture-frame tests. Rate-dependent behavior of the STF-im-AR fabric was observed during uniaxial tensile testing; however, the effect of the STF treatment was slight and consistent with only the inherent effect of the polymeric nature of its constituent fibers. The shear rigidity of the STF-im-AR fabric increased, due to the presence of the STF and the sensitivity of the fabric's shear stiffness to changes in the shear strain rate also increased slightly. This rate-sensitive shear stiffness of STF-im-AR fabrics may contribute to improved ballistic and stab resistances.