错位散斑效应在无损检测中的应用

The fault dispersive spot effect used in nondestructive inspection

本文讨论了错位散斑效应的原理和散斑图的部分相干光信息处理的方法,并给出利用该效应进行纤维板试体无损检测的实验结果和照片。理论和实验表明,利用这一方法进行无损检测,实验设备比较简单,对环境要求不高,而检测灵敏度很高,因而具有实用价值。

In this paper, the principle of the fault dispersive spot effect and the method used in processing the information of the partially coherent light of the diSpersive spot diagrams are explained. The experimental result and photographs obtained in utilizing the effect to test nondestructively the fibre board samples are presented. the theory and experiments have shown that the experimental equipments are simpte, that their ehvironmental condition is common, that the inspection sensitivity is high when the method is used in the nondestructive inspection. Therefore it is useful.