基于数字图像相关法的纱线和织物微观变形测量

doi:10.13475/j.fzxb.20210911207

纺织学报 ›› 2022, Vol. 43 ›› Issue (11): 52-58.doi: 10.13475/j.fzxb.20210911207

基于数字图像相关法的纱线和织物微观变形测量

王铭亮¹, 张慧乐², 岳晓丽¹, 陈慧敏¹()

1.东华大学机械工程学院, 上海 201620
2.电子科技大学长三角研究院(湖州), 浙江湖州 313000

收稿日期:2021-09-29 修回日期:2022-01-12 出版日期:2022-11-15 发布日期:2022-12-26
通讯作者: 陈慧敏
作者简介:王铭亮(1998—),男,硕士生。主要研究方向为纺织品智能检测。
基金资助:
国家重点研发计划项目(2017YFBO309700)

Measurement of micro deformation of yarns and fabrics based on digital image correlation method

WANG Mingliang¹, ZHANG Huile², YUE Xiaoli¹, CHEN Huimin¹()

1. College of Mechanical Engineering, Donghua University, Shanghai 201620, China
2. Yangtze Delta Research Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, Zhejiang 313000, China

Received:2021-09-29 Revised:2022-01-12 Published:2022-11-15 Online:2022-12-26
Contact: CHEN Huimin

摘要/Abstract

摘要：

为连续、精确地测量纱线和织物组织单元的拉伸变形量,结合数字图像相关法(DIC),提出一种微观尺度下的单轴拉伸变形测量方法。首先选取4种织物,从织物中抽取纱线、裁剪织物试样,并制作合理的散斑。然后对纱线和织物试样分别进行单轴拉伸实验并用相机记录整个过程。最后在DIC测试软件中添加引伸计,计算拉伸过程中单纱分段线应变以及织物单元结构在经、纬方向上的线应变。结果表明:单纱拉伸过程中,各处线应变增长速率不同;织物微小变形下内部结构呈非均匀变形,其中纬编针织物线圈变形不均匀性更为明显。基于DIC的微观变形测量方法揭示了纱线和织物生产、应用中的微量变形规律,为智能可穿戴电子纺织品的设计与应用提供指导。

关键词: 数字图像相关法, 微观尺度, 线应变测量, 纺织品检测

Abstract:

In order to measure the tensile deformation of yarns and structural repeat in fabrics accurately and continuously, a method for uniaxial tensile test was proposed in micro scale based on a digital image correlation method (DIC). Four types of fabric were selected, and yarn samples were acquired from the fabrics before the fabrics were cut into testing samples. A designed speckle pattern was made on each sample. As the next step, the yarn and fabric samples were subjected to uniaxial tensile tests and the whole process was recorded by camera. Extensometers were introduced in the DIC testing software to calculate the linear strain of segmented parts on single yarn and the linear strain of fabric along the warp and weft directions. The results show that the linear strain increases at different rates in each part on the yarn during the tensile process. When the fabric is stretched by small deformation, the deformation of fabric is non-uniform, especially for weft knitted fabrics. The method to measure the micro deformation based on DIC reveals the deformation patterns for yarns and fabrics in production and application, and it provides information for the design and application of intelligent wearable electronic textiles.

Key words: digital image correlation method, micro scale, linear strain measurement, textile testing

中图分类号:

TS101.8

王铭亮, 张慧乐, 岳晓丽, 陈慧敏. 基于数字图像相关法的纱线和织物微观变形测量[J]. 纺织学报, 2022, 43(11): 52-58.

WANG Mingliang, ZHANG Huile, YUE Xiaoli, CHEN Huimin. Measurement of micro deformation of yarns and fabrics based on digital image correlation method[J]. Journal of Textile Research, 2022, 43(11): 52-58.

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参考文献 14

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试样编号	织物成分	织物类型	面密度/ (g·m^-2)	纱线线密度/ tex
1^#	涤纶	平纹机织	120	13.0
2^#	棉	纬编针织	160	22.4
3^#	棉	纬编针织	140	18.2
4^#	涤/棉 (65/35)	纬编针织	144	14.6

试样编号	引伸计应变速率/ (%·s^-1)
试样编号	最大值	最小值
1^#-A1	0.277 0	0.202 3
1^#-A2	0.266 9	0.175 2
1^#-A3	0.223 2	0.169 1
1^#-A4	0.412 3	0.111 0
1^#-A5	0.386 3	0.199 9
1^#-A6	0.458 3	0.093 6
2^#-A1	0.248 8	0.137 6
2^#-A2	0.278 3	0.118 8
2^#-A3	0.257 3	0.101 2
3^#-A1	0.178 6	0.104 5
3^#-A2	0.215 4	0.098 6
3^#-A3	0.243 3	0.094 1
4^#-A1	0.155 9	0.079 9
4^#-A2	0.205 7	0.091 3
4^#-A3	0.192 3	0.109 2

织物编号	纵向拉伸应变标准差/%		横向拉伸应变标准差/%
织物编号	伸长	收缩	伸长	收缩
1^#	0.329 6	0.194 8	0.599 9	0.393 6
2^#	1.270 5	1.249 2	0.352 4	0.645 5
3^#	0.440 9	0.617 6	0.378 2	0.435 8
4^#	0.645 4	0.667 1	0.348 9	0.481 0

基于数字图像相关法的纱线和织物微观变形测量

Measurement of micro deformation of yarns and fabrics based on digital image correlation method

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