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

　　本案例(li)用于快速呈(cheng)現(xian)激(ji)(ji)光熔(rong)(rong)覆(fu)(fu)層(ceng)（以304不銹(xiu)鋼(gang)為例(li)）的電(dian)(dian)(dian)導率分(fen)布(bu)，從而(er)分(fen)析其結構變化(hua)。通(tong)過對比分(fen)析了(le)在不同(tong)電(dian)(dian)(dian)極(ji)數量、激(ji)(ji)勵測(ce)量模式及(ji)溫(wen)度(du)(du)變化(hua)下的檢(jian)(jian)測(ce)情況，驗證了(le)這種檢(jian)(jian)測(ce)方法的可(ke)行(xing)性。測(ce)試結果表明，使用16電(dian)(dian)(dian)極(ji)及(ji)間隔激(ji)(ji)勵測(ce)量模式能得到(dao)穩(wen)定的測(ce)量電(dian)(dian)(dian)壓(ya)數據(ju)，且超分(fen)辨(bian)率圖像重建(jian)算(suan)法能準確識(shi)別不同(tong)形狀的熔(rong)(rong)覆(fu)(fu)層(ceng)。同(tong)時，還發現(xian)，在加(jia)熱區(qu)域，304不銹(xiu)鋼(gang)熔(rong)(rong)覆(fu)(fu)層(ceng)的導電(dian)(dian)(dian)性與常溫(wen)區(qu)域有顯著差(cha)異(yi)，說明電(dian)(dian)(dian)子(zi)運動速度(du)(du)和電(dian)(dian)(dian)導率分(fen)布(bu)隨溫(wen)度(du)(du)變化(hua)明顯。

　　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