Optimization of CR testing process for pressure vessel with composite ceramic thermal insulation
摘 要
针对复合陶瓷保温结构射线检测时垫板结构对X射线穿透性能的影响,研究了复合陶瓷保温层厚度、附加垫板结构及X射线透照工艺中关键参数(管电压、曝光时间等)对检测图像质量的影响。结果表明:复合陶瓷保温层厚度的增加及附加垫板结构会降低对比灵敏度与图像分辨率,降低图像质量;检测固定厚度的复合陶瓷及压力容器焊缝时,随着管电压的升高,图像对比灵敏度下降,当管电压为190 kV时,图像分辨率达到最佳值;曝光时间的延长可以提高对比灵敏度和信噪比,并改善图像质量。
Abstract
This paper focuses on the influence of the lining structure on the ray penetration performance in the radiographic testing of composite ceramic thermal insulation structure. The influences of the composite ceramic insulation thickness, the structure of additional plate and the key parameters (tube voltage, exposure time, etc.) of the radiographic testing on the image quality were studied. The results show that the increase of the composite ceramics insulation thickness and the additional plate structure will reduce the contrast sensitivity and image resolution, and hence reduce the image quality; when inspecting welds of composite ceramics and pressure vessels with a fixed thickness, as the tube voltage increases, the image contrast sensitivity decreases. When the tube voltage is 190 kV, the image resolution reaches the optimal value; the increase of the exposure time can improve the contrast sensitivity and the normalized signal-to-noise ratio, so the increase of the exposure time can therefore improve the image quality.
中图分类号 TG115.28 DOI 10.11973/wsjc202110007
所属栏目 试验研究
基金项目
收稿日期 2021/4/9
修改稿日期
网络出版日期
作者单位点击查看
备注刘会彬(1990-),男,硕士,工程师,主要从事特种设备无损检测新技术等工作
引用该论文: LIU Huibin,LU Shuhua,MO Rongming,MO Renjiang,LI Fusheng. Optimization of CR testing process for pressure vessel with composite ceramic thermal insulation[J]. Nondestructive Testing, 2021, 43(10): 34~36
刘会彬,陆树华,莫荣明,莫仁江,李福生. 复合陶瓷保温结构压力容器CR检测工艺优化[J]. 无损检测, 2021, 43(10): 34~36
共有人对该论文发表了看法,其中:
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】陈小明, 石爱玲, 张军辉, 等.浅谈CR检测中的分辨力与分辨率[J].无损检测, 2020, 42(2):17-20, 31.
【2】李永君, 肖俊峰, 高松, 等.精密铸造高温合金板材射线CR检测技术研究[J].铸造, 2020, 69(4):392-395.
【3】毛国均, 柴军辉, 张子健, 等.基于X射线计算机辅助成像技术的带料管道焊缝检测[J].无损检测, 2020, 42(4):36-41, 45.
【4】陈乐, 强天鹏, 盛佩军, 等.管电压对射线数字成像检测成像质量的影响[J].无损检测, 2020, 42(2):12-16.
【5】蒋雪松. CR在工程检测中扫描参数对图像质量的影响[J].无损探伤, 2020, 44(3):47-48.
【2】李永君, 肖俊峰, 高松, 等.精密铸造高温合金板材射线CR检测技术研究[J].铸造, 2020, 69(4):392-395.
【3】毛国均, 柴军辉, 张子健, 等.基于X射线计算机辅助成像技术的带料管道焊缝检测[J].无损检测, 2020, 42(4):36-41, 45.
【4】陈乐, 强天鹏, 盛佩军, 等.管电压对射线数字成像检测成像质量的影响[J].无损检测, 2020, 42(2):12-16.
【5】蒋雪松. CR在工程检测中扫描参数对图像质量的影响[J].无损探伤, 2020, 44(3):47-48.
相关信息