Abstract:

The required samples were prepared to study the compression peoperty of curved three-dimensional(3-D)flat-dnitted spacer fabric composites and to provide cexperimental data for the study of subsequent low speed impact and residual strength. 3-D flat-dnitted spacer fabrics were knitted into flat and curvilinear shapes, then flat-dnitted 3-D spacer fabric composites curved indifferent angles were developed. Compression tests on the universal material testing machine were carried out in various curvilinear composites, and stress-strain curves thereof were compared. The results reveal that whether composites with flat-knitted spacer faburc or with curvilinear spacer fabrics, when other experimental conditions being equal, its coursewise compression peak is significantly higher than that of longitudunal direction, and compression peak also gradually increases with the increase of curvature.

Key words: three-dimensional flat-dnitted spacer fabric, curved composite, flat-knitted spacer fabric, compression property