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        Compression Property of Curved Three-dimensional Flat-knitted Spacer Fabric Composites under Quasi-static Loading

        Xiaoying Li,Shuang Yu,Pibo Ma,Gaoming Jiang,Honglian Cong 한국섬유공학회 2019 Fibers and polymers Vol.20 No.9

        In order to study the compression property of curved three-dimensional(3D) flat-knitted spacer fabric compositesand to provide experimental data for the study of subsequent low speed impact and residual strength, 3D flat-knitted spacerfabrics were knitted into flat and curvilinear shapes, then 3D flat-knitted spacer fabric composites curved in different angleswere developed. Compression tests on various curvilinear composites were carried out using the universal material testingmachine after which stress-strain curves are compared. The results revealed that when other experimental conditions are thesame, the coursewise compression peak was significantly higher than waleswise, and compression peak also graduallyincreased with the increase of curvature, no matter the surface of 3D spacer fabric reinforced composites is flat or curvilinear. This research will lay the foundation for the further mechanical property study of curved 3D spacer fabric composites.

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