工业CT检测过程中切片厚度的确定方法  

Confirmation method of slice thickness in ICT detection process

作　　者：张维国[1] 赵立伟[2] 王晓艳[1] 李红伟[1] 唐盛明[1] 郝丽萍[1] 

机构地区：[1]中国兵器科学研究院宁波分院,浙江宁波315103 [2]北京控制工程研究所,北京100080

出　　处：《兵器材料科学与工程》2014年第3期110-113,共4页Ordnance Material Science and Engineering

摘　　要：工业CT切片厚度是一个重要工艺参数,对于小的缺陷,切片厚度的选择需要在缺陷对比度降低和噪声增加之间做一个平衡。通过理论分析图像噪声对缺陷检测的影响,并试验研究切片厚度对图像噪声大小的影响。结果表明,实际检测过程中减小切片厚度可以增加薄型缺陷的检出率。The slice thickness is an important parameter in ICT detection process, it needs to make a choice between low contrast and high SNR for small defects. The impact of SNR on defect detection was analyzed in theory, and the effect of slice thickness on SNR was studied through experimental research. The results show that in the actual detection process, reducing the slice thickness can increase the defect detection rate.

关 键 词：工业CT 切片厚度 噪声 

分 类 号：TG68[金属学及工艺—金属切削加工及机床]