Optimization design of excitation parameters and excitation coil parameters in pulsed eddy current testing
-
摘要: 在采用脉冲涡流技术对铁磁性承压设备进行缺陷检测时，脉冲激励参数和激励线圈参数的不同会对检测结果造成较大影响。首先，利用有限元法建立了脉冲涡流检测铁磁性试件厚度的仿真模型；其次，以差分信号峰值为特征分析了脉冲激励参数和激励线圈参数对检测灵敏度和分辨率的影响，依据影响规律确定了脉冲激励参数和激励线圈参数，通过仿真试验确定了在该参数下的有效壁厚检测范围；最后，通过测试件试验，验证了仿真结果的正确性。Abstract: While using pulsed eddy current testing technology to detect the wall thickness of ferromagnetic pressure equipment, the difference between the pulsed excitation parameters and the excitation coil parameters will greatly affect the test results.Firstly, a simulation model of pulsed eddy current test for ferromagnetic specimen thickness is established by finite element method.Then, the influence of pulse excitation parameters and excitation coil parameters on the detection sensitivity and resolution is analyzed by taking the differential signal peak as the characteristic.According to the influence law, the pulse excitation parameters and excitation coil parameters are determined, the range of effective wall thickness detection under this parameter is determined by simulation experiment.Finally, the correctness of the simulation results is verified by the test results.
-
-
[1] 徐志远. 带包覆层管道壁厚减薄脉冲涡流检测理论与方法[D]. 武汉:华中科技大学, 2012. [2] FAN M B, CAO B H, YANG P P, et al. Elimination of lift off effect using a model-based method for eddy current characterization of a plate[J]. NDT & E International, 2015, 74:66-71.
[3] 徐志远,武新军,黄琛,等.激励参数和试件电磁参数对脉冲涡流检测影响的仿真分析[J].无损检测,2008,30(6):1-14. [4] 张辉, 杨宾峰, 王晓锋, 等. 脉冲涡流检测中参数影响的仿真分析与实验研究[J]. 空军工程大学学报(自然科学版), 2012, 13(1):52-57. [5] 周德强,闫向阳,尤丽华.激励参数对脉冲涡流缺陷检测的仿真分析[J].无损检测,2012,34(10):8-11. [6] 朱红运, 王长龙, 江涛, 等. 激励电流对脉冲涡流检测的影响研究[J]. 仪器仪表学报, 2016, 37(1):1-8. [7] 戴光, 李鹏, 李良, 等. 基于脉冲涡流检测的管道腐蚀仿真与实验研究[J]. 化工设备与管道, 2016, 53(2):63-66, 75. [8] 侯春明. 基于脉冲涡流海底管道无损检测理论与技术研究[D]. 大连:大连理工大学, 2017. [9] 柯海,徐志远,黄琛,等.基于信号斜率的铁磁材料脉冲涡流测厚研究[J].仪器仪表学报,2011,32(10):2376-2381.
计量
- 文章访问数: 6
- HTML全文浏览量: 2
- PDF下载量: 4
下载:
