電阻層析成像模塊

　基于電導率層析成像的304不銹鋼熔覆層電導率檢測研究

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

　　背景介紹

　　Background

　　本(ben)案例用于(yu)快速(su)呈現激光熔(rong)覆層(ceng)（以304不(bu)銹鋼為(wei)例）的(de)(de)電(dian)(dian)(dian)導率(lv)分(fen)布，從而分(fen)析其結構變化(hua)。通過對比分(fen)析了在不(bu)同電(dian)(dian)(dian)極數(shu)量(liang)、激勵測量(liang)模式及溫度變化(hua)下的(de)(de)檢(jian)測情況，驗(yan)證(zheng)了這(zhe)種檢(jian)測方(fang)法(fa)的(de)(de)可行性(xing)(xing)。測試結果表明，使用16電(dian)(dian)(dian)極及間(jian)隔(ge)激勵測量(liang)模式能得到(dao)穩定(ding)的(de)(de)測量(liang)電(dian)(dian)(dian)壓數(shu)據，且超分(fen)辨率(lv)圖(tu)像重建(jian)算法(fa)能準(zhun)確識別不(bu)同形狀的(de)(de)熔(rong)覆層(ceng)。同時，還發(fa)現，在加熱區域，304不(bu)銹鋼熔(rong)覆層(ceng)的(de)(de)導電(dian)(dian)(dian)性(xing)(xing)與常溫區域有(you)顯(xian)(xian)著差異，說明電(dian)(dian)(dian)子運動速(su)度和電(dian)(dian)(dian)導率(lv)分(fen)布隨溫度變化(hua)明顯(xian)(xian)。

　　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.

　　關鍵技術1：激光熔覆實驗平臺搭建

　　Laser cladding experimental platform construction

　　關鍵技術2：檢測系統實驗平臺搭建

　　Detection system experimental platform construction

　　關鍵技術3：圖像重建求解研究

　　Detection system experimental platform construction