织物多方向弯曲性能测试新方法

New measurement method for fabric multi-directional bending performance

针对现有的织物弯曲性能测试方法利用一块试样只能得到一个方向结果的问题,探索了织物多方向弯曲性能测试方法。首先,选取20块常见织物,用传统的斜面法测试织物0°、90°、45°和135°的弯曲长度;然后,用自行设计的多方向弯曲性能测试方法测试织物4个方向(0°、90°、45°和135°)的投影长度和投影面积;最后,用相关分析研究了投影长度和投影面积与弯曲长度的关系。结果表明:投影长度和投影面积均与弯曲长度具有较好的相关性,相关系数约为0.95;本文方法可利用一块试样同时测试织物0°、90°、45°和135°的弯曲性能,且每个方向有2组结果,比传统的斜面法更高效,还可将织物弯曲各向异性可视化,在一个图像上体现某一方向的弯曲稳定性。

Under the widely used testing method for fabric bending performance,only one result for one direction can be obtained by using one fabric.To investigate a testing method that can characterize fabric multi-directional bending performance simultaneously,20 common fabrics were chosen and tested with the conventional method to obtain the bending length in the directions of 0°、90°、45°和135°by cutting the fabric sample into stripes along these four directions for testing.Correlation analysis was conducted between projection length and projection area with bending length.It was concluded that both the projection length and projection area have good correlation with bending length of the conventional method,with the coefficient about 0.95,which proves the new method can be used to characterize the bending properties of 0°、90°、45°and 135°.Two reading can be obtained in each direction,and therefore,it is more efficient and accurate than the conventional method.Besides,it can visualize fabric anisotropy in bending performance and display the testing stability of bending in one direction.