Method of Generating Virtual Flaw Detection Image for X-Ray Inspection of Castings
With the continuous improvement of the requirements for parts of national defense core equipment,castings are developing in the direction of complex structures,such as large wall thickness differences and multi-cross structures,which make it more difficult to detect internal defects in castings.In the process of X-ray flaw detection,filming relies on manual adjustment of imaging parts and parameters.There are problems such as easy missed detection of flaw detection parts and large fluctuations in imaging quality.It is urgent to develop intelligent partition parameter adjustment filming technology.For this reason,this paper proposes a method for generating virtual flaw detection images for X-ray inspection of castings.Firstly,the casting coordinate dimension reduction mapping model is established,and the dimension reduction mapping of the casting three-dimensional coordinates to the two-dimensional coordinates of the imaging plate is realized.Secondly,the simulation imaging parameter fitting model is established,and the simulation flaw detection image of the standard three-dimensional model of the casting is generated by the point source virtual ray.Finally,a virtual imaging system for X-ray inspection of castings is developed by integrating the two models.This method can provide optimized imaging attitude and imaging parameter information for actual flaw detection,and provide theoretical support for intelligent partition parameter adjustment and filming technology.
X-ray inspection3D model of castingpoint imagingvirtual flaw detection image
国家科技期刊平台
NSTL
万方数据
