电阻层析成像模块

　基于电导率层析成像的304不锈钢熔覆层电导率检测研究

　　Research on conductivity detection of 304 stainless steel cladding layer based on conductivity tomography

　　背景介绍

　　Background

　　本案例用于快速呈现激光熔覆层（以304不锈钢为例）的电导率分布，从而分析其结构变化。通过对比分析了在不同电极数量、激励测量模式及温度变化下的检测情况，验证了这种检测方法的可行性。测试结果表明，使用16电极及间隔激励测量模式能得到稳定的测量电压数据，且超分辨率图像重建算法能准确识别不同形状的熔覆层。同时，还发现，在加热区域，304不锈钢熔覆层的导电性与常温区域有显著差异，说明电子运动速度和电导率分布随温度变化明显。

　　This case is used to quickly present the conductivity distribution of the laser cladding layer (taking 304 stainless steel as an example) to analyze its structural changes. The feasibility of this detection method was verified by comparative analysis of detection conditions under different electrode numbers, excitation measurement modes, and temperature changes. The test results show that using 16 electrodes and spaced excitation measurement mode can obtain stable measurement voltage data, and the super-resolution image reconstruction algorithm can accurately identify cladding layers of different shapes. At the same time, it was also found that the conductivity of the 304 stainless steel cladding layer in the heating area is significantly different from that in the normal temperature area, indicating that the electron movement speed and conductivity distribution change significantly with temperature.

　　关键技术1：激光熔覆实验平台搭建

　　Laser cladding experimental platform construction

　　关键技术2：检测系统实验平台搭建

　　Detection system experimental platform construction

　　关键技术3：图像重建求解研究

　　Detection system experimental platform construction