纺织学报 ›› 2019, Vol. 40 ›› Issue (11): 81-87.doi: 10.13475/j.fzxb.20180607507

• 纺织工程 • 上一篇    下一篇

基于超声相控阵的机织层合复合薄板试件内部缺陷检测方法

肖志涛1, 郭永敏2, 耿磊1(), 吴骏1, 张芳1, 王雯1, 刘彦北1   

  1. 1.天津工业大学 电子与信息工程学院, 天津 300387
    2.天津工业大学 机械工程学院, 天津 300387
  • 收稿日期:2018-06-25 修回日期:2019-08-04 出版日期:2019-11-15 发布日期:2019-11-26
  • 通讯作者: 耿磊
  • 作者简介:肖志涛(1971—),男,教授,博士。主要研究方向为图像处理。
  • 基金资助:
    中国纺织工业联合会应用基础研究项目(J201509);天津市高等学校创新团队培养计划资助项目(TD13-5034)

Internal defect detection method for thin test pieces of woven laminated composites based on ultrasonic phased array

XIAO Zhitao1, GUO Yongmin2, GENG Lei1(), WU Jun1, ZHANG Fang1, WANG Wen1, LIU Yanbei1   

  1. 1. College of Electronics and Information Engineering, Tiangong University, Tianjin 300387, China
    2. School of Mechanical Engineering, Tiangong University, Tianjin 300387, China
  • Received:2018-06-25 Revised:2019-08-04 Online:2019-11-15 Published:2019-11-26
  • Contact: GENG Lei

摘要:

针对机织层合薄板复合材料试件的内部缺陷,采用超声相控阵检测法对其进行超声100%扫查,并对得到的超声定位的缺陷区域进行分析;建立了超声回波A扫描波形图、B扫描图像以及C扫描图像和机织层合板复合材料内部区域缺陷分布的对应关系,分析比较了复合材料试件分别在同时激发4、8、16个晶片(阵元)的条件下得到的超声检测结果图,并在相控阵设置最优条件下对复合材料进行横纵方向超声扫描得到检测图,针对C扫描得到的缺陷扫查图进行定量分析。研究结果表明:扫描得到的超声A扫描波形图、B扫描图像以及C扫描图像在复合材料缺陷的位置上有一一对应的关系,超声相控阵检测法可用于机织层合板复合材料的无损检测及其缺陷的初步评价。

关键词: 机织层合薄板复合材料, 缺陷检测, 超声相控阵检测, 超声回波, 无损检测

Abstract:

As defects may exist in the test pieces of woven laminated composites, the method of ultrasonic array test is used to carry out 100% ultrasonic scanning of woven laminated composite and the defect areas obtained by ultrasonic positioning were analyzed. The corresponding relation of the ultrasonic echo A flicking waveform, B and C scan images and the internal defects distribution of woven laminated composites were researched. The results of ultrasonic testing for the composite inspiring 4,8,16 elements at the same time and the scanning ultrasonic testing results for the thin braided composites in the horizontal and vertical direction under the optimal condition were compared. A simple quantitative analysis of C scan image of the defects was conducted. Experimental results show that there is a one-to-one corresponding relationship on the defect display of woven laminated composites between the ultrasonic A scan echo, B and C scan images. The ultrasonic phased array detection method can be used to evaluate the nondestructive testing and defects of woven laminated composites.

Key words: woven laminated composites, defect detection, ultrasonic phased array detection, ultrasonic echo, non-destructive testing

中图分类号: 

  • TS101.8

图1

实验图"

表1

超声相控阵参数设置"

名称 参数 名称 参数
材料声速 2 330.0 m/s 声波类型 纵波
法则配置 0°线性 扫查方式 扫查器扫查
聚焦深度 2 mm 成像显示 A-B、A-C
第一晶片 1个 扫查速度 30.0 mm/s
最后晶片 64个 编码器分辨率 13步距/mm
晶片步距 1

图2

0°声束声场图"

图3

同时激发4个阵元扫查图 注:左为定位无缺陷点;右为定位有缺陷点。"

图4

同时激发8个阵元扫查图 注:左为定位无缺陷点;右为定位有缺陷点。"

图5

同时激发16个阵元扫查图 注:左为定位无缺陷点;右为定位有缺陷点。"

图6

横纵方向扫查图"

图7

扫查复合材料得到的C扫描图和B扫描图"

图8

缺陷1,2,3对应的波形图"

图9

缺陷3成像图"

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