摘要
金属表面缺陷电磁场分布情况是影响电涡流探测器灵敏度的主要原因。采用有限元方法和ANSYS工具,建立了电涡流探测器仿真过程中的有限元建模、材料特性定义、网格划分、边界条件设置、模型加载及模型求解等算法,对电涡流的电磁场分布进行仿真分析,并辅助设计电涡流探测器的线圈形状结构以及工作频率对传感器灵敏度的影响,并进行了实验研究,该技术可行,可指导电涡流探伤传感器优化设计和近表面缺陷无损检测。
The main reason for affecting eddy current detector sensitivity is the distribution of electromagnetic field of the metal surface. The eddy current electromagnetic field distribution is studied by finite element method （FEM） and ANSYS software tool. The algorithms, such as finite element model, material parameters, network nodes, boundary conditions, model solver , are established to develop eddy current sensor and select work frequency, a series of experimental study has been carried out to verify the simulation result. The experiment result has showed that it is effective to design optimizing eddy current sensors and guide near-surface defect destructive detection.
出处
《现代科学仪器》
2010年第3期14-16,25,共4页
Modern Scientific Instruments
基金
国家自然科学基金(基金编号:50974151)
