视差法及CIVA仿真在数字射线检测缺陷深度定位中的应用
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摘要
介绍了精确式视差法测量缺陷深度的原理,通过带缺陷试样的数字射线透照试验,结合CIVA软件仿真模拟,探究了该方法的可行性,分析了影响测量精度的因素。采用数字成像技术替代常规胶片成像技术,弥补了其检测效率低、测量困难、测量误差大等不足。同时引入了验证标记对测量结果进行准确验证,避免了因操作原因造成的定位误差。
In this paper,the principle of measuring the depth of defects by parallax method is introduced.Through the digital radiography testing with defective workpiece and CIVA simulation,the feasibility of the method is explored and the factors influencing the measurement accuracy are analyzed.Digital radiography technology makes up for the disadvantages of conventional film imaging technology such as low detection efficiency,difficulty in measurement,and large measurement error.At the same time,the verification mark is introduced to accurately verify the measurement result,and the positioning error caused by the operation is avoided.
In this paper,the principle of measuring the depth of defects by parallax method is introduced.Through the digital radiography testing with defective workpiece and CIVA simulation,the feasibility of the method is explored and the factors influencing the measurement accuracy are analyzed.Digital radiography technology makes up for the disadvantages of conventional film imaging technology such as low detection efficiency,difficulty in measurement,and large measurement error.At the same time,the verification mark is introduced to accurately verify the measurement result,and the positioning error caused by the operation is avoided.
引文
[1]郑世才.射线检测[M].北京:机械工业出版社,2004.
[2]蔡闰生,任华友.X射线照相缺陷定位方法分析与验证[J].宇航材料工艺,2013,43(3):129-133.
[3]李衍,李华.焊缝射线照相缺陷测深技术[J].中国锅炉压力容器安全,2001,17(5):40-43,46.
[4]杨飞.X射线数字成像中的缺陷定位检测技术研究[D].太原:中北大学,2003:6-7.
[5]刘海强,熊瑛,郭佳,等.射线平移二次缺陷定位方法的探讨[J].无损探伤,2016,40(5):43-45.
[6]张军辉.钛合金焊接结构缺陷检测与定位方法[D].哈尔滨:哈尔滨工业大学,2008:6-7.
[2]蔡闰生,任华友.X射线照相缺陷定位方法分析与验证[J].宇航材料工艺,2013,43(3):129-133.
[3]李衍,李华.焊缝射线照相缺陷测深技术[J].中国锅炉压力容器安全,2001,17(5):40-43,46.
[4]杨飞.X射线数字成像中的缺陷定位检测技术研究[D].太原:中北大学,2003:6-7.
[5]刘海强,熊瑛,郭佳,等.射线平移二次缺陷定位方法的探讨[J].无损探伤,2016,40(5):43-45.
[6]张军辉.钛合金焊接结构缺陷检测与定位方法[D].哈尔滨:哈尔滨工业大学,2008:6-7.