摘要
对检测图像的空间分辨率、信噪比和对比度的影响因素进行了研究。采用不同的工艺参数对碳纤维缠绕发动机壳体进行了数字射线DR成像检测试验。试验结果表明,当其他检测参数不变时,焦点尺寸和放大倍数对图像的空间分辨率影响较大;管电压、管电流和单帧积分时间对图像的信噪比有影响;管电压和管电流对图像的对比度均具有一定影响。
The influence factors of spatial resolution,signal-to-noise ratio and contrast of images were researched.The digital radiography experiments were carried out on carbon filament-wound motor case with different technological parameters.The results show that when other parameters are consistent,focus size and magnifications have great effects on spatial resolution,the SNR of the images are affected by the tube voltage,tube current and single frame integration,both tube voltage and tube current have effects on image contrast.
作者
刘凯
王晓勇
袁孟春
LIU Kai;WANG Xiaoyong;YUAN Mengchun(Jiangbei Machinery Engineering Co.,Ltd.,Xiaogan 432100)
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2020年第5期76-82,共7页
Aerospace Materials & Technology
关键词
缠绕壳体
数字射线
空间分辨率
对比度
信噪比
Filament-wound motor case
Digital radiography
Spatial resolution
Contrast
SNR
