空军工程大学学报（自然科学版）2012，Vol.13Issue(1)：52-57,6.DOI:10.3969/j.issn.1009-3516.2012.01.012
脉冲涡流检测中参数影响的仿真分析与实验研究
Simulation Analysis and Experimental Research on Parameter Influence in Pulsed Eddy Current Nondestructive Testing Technique
摘要
Abstract
The dimension of probe and the exciting parameters have an obvious influence on the result of pulsed eddy current (PEC) nondestructive testing, the capability of the PEC inspection system can be improved by optimizing these parameters. Based on the analysis of the principle of PEC, the PEC model is established by ANSYS finite element simulation software to analyze the influence of the variation of probe dimension on the eddy current decay law and that of the change of exciting frequency and duty cycle on the detecting sensitivity. The simulation results show that the attenuation of the eddy current slows down with the increase of exciting coil length, and the attenuation of the eddy current quickens with the increase of exciting coil width and highness. The influence of exciting frequency and duty cycle on the detecting sensitivity of defect has a relationship with the specimen thickness, the exciting frequency should be appropriately decreased and the duty cycle increased in inspecting thick specimen. Finally, the results of simulation are testified by experiment methods, the agreement between simulation and experiment shows the correctness of simulation.关键词
脉冲涡流/矩形传感器/激励频率/占空比/优化设计Key words
pulsed eddy current/ rectangular probe/ exciting frequency/ duty cycle/ optimization design分类
矿业与冶金引用本文复制引用
张辉,杨宾峰,王晓锋,赵玉丰..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):52-57,6.基金项目
国家自然科学基金资助项目(50807053 （）
51107149) （）
陕西省自然科学基金资助项目(2011JQ6010) （2011JQ6010）
