C-scan experimental analysis of flexible Koch fractal eddy current sensor
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摘要:
利用柔性科赫分形涡流传感器与传统柔性圆形分形涡流传感器,基于C扫描方式对金属表面裂纹的覆盖面进行了检测。试验结果表明,使用C扫描方法,可以对长度不小于3 mm的裂纹进行有效识别。其中,与传统柔性圆形分形涡流传感器相比较,柔性科赫分形涡流传感器所检测的信号衰减程度较小,不易出现漏检现象,且在检测微小裂纹时表现得尤为明显。
Abstract:In this paper, the coverage area of metal surface cracks was detected based on C-scan mode by using flexible Koch fractal eddy current sensor and traditional flexible circular parting eddy current sensor. The experimental results showed that cracks with a length greater than or equal to 3 mm can be effectively identified by C-scan. Among them, compared with the traditional flexible circular fractal eddy current sensor, the signal attenuation detected by the flexible Koch type eddy current sensor was small, and the phenomenon of missed detection was not easy to occur, and the detection of small cracks was particularly obvious.
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Table 1 试块中的被测裂纹参数
裂纹序号 长度/mm 宽度/mm 深度/mm 方向/（°） 1~7 5 0.15 0.2~1.4（步长0.2） 90 8~14 5 2.0,1.8,1.5,1.0,0.5,0.3,0.1 1 90 15~21 3 0.15 1 0~90（步长15） 22~28 20,15,10,5,3,1,0.5 0.15 1 90 
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[1] GATSA V ,HOUHAT N ,MÉNIGOT S.Hybrid optimization of driving frequency for crack signature enhancement in nonlinear ultrasonic nondestructive testing[J]．Applied Acoustics,2022,195：108810． [2] 尚柏林,宋笔锋,杨建军.飞机结构健康监测传感器新技术[J].无损检测,2008,30（5）：289-291,324. [3] 谢建红,袁阿琳,吴莎莎,等.航空发动机涡轮叶片近表面缺陷的涡流检测[J].无损检测,2022,44（9）：13-15,21. [4] SONG Y J ,CHEN T ,CUI R H ,et al.The durability of flexible eddy current array（FECA）sensors in harsh service environments[J]．Scientific Reports,2021,11：10341． [5] MIRZAEI M ,RIPKA P.A linear eddy current speed sensor with a perpendicular coils configuration[J]．IEEE Transactions on Vehicular Technology,2021,70（4）：3197-3207. [6] FAN X H ,HE Y T ,CHEN T.Series and interactive sensing coil layouts for reducing sensing channels of flexible eddy current array sensor[J]．Sensor Review,2022,42（4）：440-454. [7] DING H ,HE Y T ,JIAO S B.Rosette eddy current sensor for structural health monitoring[J]．Applied Mechanics and Materials,2013,330：430-436. [8] SHE S B ,LIU Y Z ,ZHANG S J ,et al.Flexible differential butterfly-shape eddy current array sensor for defect detection of screw thread[J]．IEEE Sensors Journal,2021,21（18）：20764-20777. [9] 陈国龙,张帅帅,樊乐,等.柔性差测量科赫分形涡流传感器内部裂纹检测[J].仪器仪表学报,2023,44（11）：234-242. [10] 陈国龙,张帅帅,曹政,等.绝对式科赫分形平面涡流传感器裂纹检测性能研究[J].仪器仪表学报,2022,43（10）：98-107. [11] KADLEC M ,RŮŽEK R.A comparison of laser shearography and C-scan for assessing a glass/epoxy laminate impact damage[J]．Applied Composite Materials,2012,19（3）：393-407. [12] 胡文刚,刘伟,朱瑞灿,等.基于超声C扫描的复杂结构焊缝缺陷检测[J].焊接,2021（4）：57-61,64. [13] WANG N ,LIU X C ,ZHOU B ,et al.Eddy current O-scan and C-scan imaging techniques for macrocrack detection in silicon solar cells[J]．Nondestructive Testing and Evaluation,2019,34（4）：389-400. [14] CHEN G L ,WEI J ,ZHANG S S ,et al.Differential Koch planar eddy current probe sensitivity boosting by iron particulate sheet[J]．IEEE Transactions on Instrumentation and Measurement,2023,72：6010609．
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