纺织学报 ›› 2019, Vol. 40 ›› Issue (06): 27-31.doi: 10.13475/j.fzxb.20180804705

• 纺织工程 • 上一篇    下一篇

经编光纤传感织物结构变化对光纤弯曲损耗的影响

杨昆1(), 李美奇1, 张诚2, 郭溪1   

  1. 1.天津工业大学 纺织科学与工程学院, 天津 300387
    2.天津工业大学 电子与信息工程学院, 天津 300387
  • 收稿日期:2018-08-16 修回日期:2019-03-15 出版日期:2019-06-15 发布日期:2019-06-25
  • 作者简介:杨昆(1967—),男,副教授,博士。主要研究方向为智能纺织品、 新型纺纱技术和针织物。E-mail: tjkyang@126.com。
  • 基金资助:
    国家自然科学基金青年基金项目(61307094);天津市高等学校科技发展基金项目(20140713)

Effect of structure change of warp-knitted optical fiber sensing fabric on bending loss of optical fiber inlaid

YANG Kun1(), LI Meiqi1, ZHANG Cheng2, GUO Xi1   

  1. 1. School of Textile Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China
    2. School of Electronic and Information Engineering, Tianjin Polytechnic University, Tianjin 300387, China
  • Received:2018-08-16 Revised:2019-03-15 Online:2019-06-15 Published:2019-06-25

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摘要：

为研究经编光纤传感织物在纵向拉伸状态下织物结构变化对光纤弯曲损耗的影响,编织了一种以经平绒织物为地组织、聚合物光纤为衬纬纱的经编光纤传感织物。将光纤以半径为10 mm的半圆反向相接的形式织入地组织中间位置,形成传感单元。同时,测量了传感织物在拉伸条件下的线圈高度、线圈宽度和织物厚度;并测试了在织物拉伸回复状态下光纤信号的传输性能。结果表明:光纤可通过衬纬的形式与经编织物相结合;在拉伸过程中织物纱段发生转移,织物厚度随拉伸距离的增加而减小;纱线对光纤的挤压作用使光纤产生微弯损耗,且在拉伸过程中微弯和宏弯损耗相互复合。

关键词: 经编, 聚合物光纤, 传感织物, 宏弯, 损耗

Abstract:

In order to study the influence of the fabric structure change of the warp-knitted optical fiber sensing fabric on the bending loss of the optical fiber inlaid during longitudinal stretching, a warp-knitted fiber sensing fabric with a locknit construction as the ground structure and an polymer optical fiber as the inlay yarn was knitted. A section of polymer optical fiber was inlaid into the ground structure in a form of two reverse connected semicircles with a radius of 10 mm, forming a sensing unit. Stitch height, stitch width and fabric thickness under tensile loading were measured, and the signal transmission property of the optical fiber was tested. Experiment results show that the optical fiber can be combined with warp-knitted fabric in the form of weft insertion. During stretching process, yarn sections of the ground structure are transferred and fabric thickness decreases with the increase of the stretching distance. The pressing effect of the knitting yarns on the optical fiber causes the micro-bending loss of the optical fibers, and the microbending and macrobending losses are compounded during stretching process.

Key words: warp knitting, polymer optical fiber, sensing fabric, macrobending, loss

中图分类号: 

  • TS186

表1

编织纱参数"

纱线编号 种类 颜色 线密度/tex 排列位置 工作针数
Y1 棉纱 红色 36.67 前梳 8
Y2 棉纱 粉色 33.33 前梳 34
Y3 棉纱 黄色 36.00 前梳 4
Y4 棉纱 白色 35.00 后梳 46

图1

编织纱的穿纱方式"

图2

传感单元形状"

图3

经编光纤传感织物成品(反面)"

图4

不同拉伸率下线圈高度、线圈宽度和延展线长度"

图5

织物厚度与拉伸长度的关系"

图6

60 s内拉伸长度和输出电压的关系"

图7

20 mm内拉伸长度和输出电压的关系"

图8

光纤在织物中的形态模拟"

图9

拉伸时织物截面图"

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