脉冲涡流阵列缺陷成像检测技术

脉冲涡流阵列系统具有大面积、快速检测的优点,可用于金属表面裂纹的自动在线检测。在无损检测领域,应用成像技术可以直观地观测到被检测物体的缺陷位置及大小,提高检测人员的工作效率,促进无损检测技术的应用普及。设计了一套脉冲涡流阵列检测系统,包括脉冲涡流阵列探头。应用该系统对标准铝合金试件的缺陷进行了初步的成像处理,给出了标准铝合金试块缺陷成像检测结果,并指出今后的工作方向。

Pulsed Eddy Current Array Imaging Detection Technology Used for Defect Detection

Pulsed eddy current array system has the advantages of rapid detection with large area. It can he used to detect metal surface crack automatically in real time. In the field of nondestructive testing, the imaging technology can he used to get the location and the size of the defects intuitively, which not only raise the efficiency of NDT work, but also greatly contribute to the popularity of nondestructive testing technology. This paper designed a set of PEC array measurement system, which included the pulsed eddy current array probes design and analysis, and an experimental system. A standard aluminum alloy sample was done by the NDT imaging system. At last, the image test result to the standard aluminum alloy sample was given. The future direction is given in the end.