Application of alternating current field measurement technique (ACFM) in the detection of thin-walled stainless steel welds
-
摘要: 为解决核设施焊缝检测工期紧、检测要求高、传统射线检测技术需要专用时间窗口、无法交叉施工、辐射风险大等问题,提出了使用交流电磁场检测(ACFM)技术检测薄壁不锈钢焊缝中直径约为0.5 mm的小缺陷。通过理论计算研究了该技术应用于薄壁不锈钢焊缝检测的可行性;运用仿真计算优化探头设计,提高了传统ACFM检测技术的检测精度和稳定性;利用该技术对不同种类、不同尺寸的缺陷进行了检测验证。验证结果表明,针对薄壁不锈钢焊缝,该技术对危害性较大的面积型缺陷可100% 检出,且可检出直径约为0.4 mm的体积型缺陷。Abstract: The weld inspection of nuclear facilities has a short limit time and high acceptance requirements. At the same time, traditional film radiography technology requires a special time window, cannot cross operation and has high radiation risks. To solve these problems, this paper innovatively proposed to use alternating current field measurement (ACFM) technique to detect small defects of about 0.5 mm in thin-walled stainless steel welds. The feasibility of applying this technology to the detection of thin-walled stainless steel welds was studied through theoretical calculation; the probe design was optimized by simulation calculation to improve the detection accuracy and stability of ACFM. The verification results showed that for thin-walled stainless steel welds, this technology can detect all the more harmful area defects, and the volume defect with a diameter of about 0.4 mm can be detected.
-
-
[1] 张晓峰,严宇,杨建龙,等.核电主管道相控阵超声扫查器的国产化改进[J].无损检测,2022,44(7):10-12,18. [2] 王俊龙,朱序东,周杰.小径管对接焊缝的冷阴极数字X射线检测[J].无损检测,2021,43(8):21-24,57. [3] 李伟,尚亚期,杨会敏,等.基于STM32的交流电磁场检测实验系统设计[J].实验室研究与探索,2021,40(11):86-89,116. [4] 葛玖浩,杨晨开,胡宝旺,等.交流电磁场检测技术钢轨表面裂纹高速检测研究[J].机械工程学报,2021,57(18):66-74. [5] 赵国华.交流电磁场检测技术在压力容器焊缝检测中的应用[J].中国建材科技,2019,28(3):8,10. [6] LI W,YUAN X A,CHEN G M,et al.High sensitivity rotating alternating current field measurement for arbitrary-angle underwater cracks[J].NDT & E International,2016,79:123-131.
[7] YUAN X A,LI W,CHEN G M,et al.Inner circumferential current field testing system with TMR sensor arrays for inner-wall cracks inspection in aluminum tubes[J].Measurement,2018,122:232-239.
[8] 胡江,任尚坤,祖瑞丽.钢板近表面缺陷的交流电磁场检测[J].无损检测,2017,39(9):11-14.
计量
- 文章访问数: 3
- HTML全文浏览量: 0
- PDF下载量: 3
下载:
