基于声发射的钢管腐蚀损伤检测试验研究

Experimental Study on Corrosion Damage Detection of Steel Pipe Based on Acoustic Emission

采用声发射仪采集钢管在电化学腐蚀中受到损伤时发射的信号,进行钢管腐蚀损伤定位检测试验。通过对采集的波形信号数据的分析和处理,得到了钢管腐蚀损伤的能量和有效电压值的变化规律,发现越靠近钢管腐蚀严重区域的传感器采集到的撞击数、能量和有效值电压数也越多,实现了钢管腐蚀损伤发展过程的实时动态检测。结果表明:利用声发射技术可以对钢管腐蚀损伤进行较准确的定位检测。

In this paper,the acoustic emission instrument is used to collect the signal emitted by the steel pipe when it is damaged in electrochemical corrosion.Through the analysis and processing of the collected waveform signal data,the change law of the energy and effective voltage value of the steel pipe corrosion damage is obtained.It is found that the closer the sensor is to the serious corrosion area of the steel pipe,the more the number of impact,energy and effective voltage values are collected.The real-time dynamic detection of the steel pipe corrosion damage development process is realized.The results show that the acoustic emission technology can be used to detect the corrosion damage of steel pipe accurately.