织物折皱回复的各向异性表征

Characterization on anisotropy of fabric wrinkle recovery

针对织物折皱回复存在各向异性且难以描述的问题,将通过研究试样取向角与其对应的折皱回复角的关系,寻找更科学的织物折皱回复性能表征方法。选择纯棉平纹和斜纹织物为实验材料,从经纱方向（取向角定为0°）顺时针旋转,每隔15°取一试样,平纹织物取样角度范围为0°-90°,斜纹织物取样角度范围为0°-180°。通过机器视觉方法测量每一试样的折皱回复角,结果表明：平纹织物可用15°和75°取向角对应的折皱回复角均值表征织物折皱回复性能;斜纹织物折皱回复角与其纹路角度密切相关,对于左斜120°左右的斜纹织物,正面用取向角15°、105°、120°的折皱回复角均值,反面用取向角0°、60°、120°的折皱回复角均值来表示织物折皱回复性能更加合理。

Aiming to the research on the anisotropy of fabric wrinkle recovery,the relationship between the wrinkle recovery angle and the orientation angle of sample are studied to find out a more reasonable method to evaluate the fabric wrinkle recovery property. The cotton plain and twill fabrics are selected as materials. The specimens of plain fabrics are cut from the orientation angle of 0° to 90°. The twill specimens are cut from the orientation angle of 0° to 180°. The orientation angles of both types of fabrics are in the clockwise direction and at the interval of 15°,and the warp direction is set as 0°. The wrinkle recovery angles are tested by the machine vision method. The result show that the average recovery angle of 15° and 75° orientation angles can be used to assess the property of cotton plain fabric. For the twill fabrics,the property is dependent on the twill direction of the fabric. For the left inclined 120° twill fabric,it is suggested that the average recovery angle of 15°,105° and 120° orientation angles could represent the property of face-to-face folded specimens,and the average recovery angle of 0°,60° and120° orientation angles could represent the property of back-to-back ones.