漏磁检测中的缺陷重构方法

摘要

Defect reconstruction method for magnetic flux leakage ( MFL) testing is a hot and difficult spot of MFL testing defect evaluation nowadays.Reviewing the contents of the MFL testing defect reconstruction research, the fol-lowing two kinds of defecting reconstruction methods are to open loop reverse method and closed loop pseudo-reverse method which have been summarized.And the reverse model, forward model and optimization algorithm which are commonly used in them were discussed here.Furthermore, the research direction of defect reconstruction such as data fusion technology, image processing technology and the comprehensive assessment of multi-defects were proposed.%漏磁检测技术中的缺陷重构方法是目前漏磁检测缺陷评估的研究热点与难点。在对漏磁检测缺陷重构进行概述的基础上，综述了现有的缺陷重构方法：开环逆向重构法和闭环伪逆重构法，并对这两类方法中常用的逆向模型、前向模型、优化算法及其特点进行了较为详细的介绍。指出了基于数据融合技术、图像处理技术和多缺陷综合评估的缺陷重构方法的研究发展方向。