Micro-CT detection of small defects in additive manufacturing
In this paper,two groups of different types of defective specimens were designed and manufactured through high-precision metal additive manufacturing technology.Based on the micro-CT detection technology and the defect anatomical metallographic detection method,the actual detection ability of micro-CT on small defects of additive manufacturing was studied.The research results showed that micro-CT can effectively detect the artificial defects of 20 μm under the voxel size of 5 μm;metallographic detection and CT detection results were basically the same,and the difference in the measurement of the defect size was less than 10 μm;the defects of smaller sizes were more inaccurate due to the influence of the partial volume effect of the dimensional measurement results.
万方数据
维普
