Industrial CT imaging is the use of rays (mainly X-rays and gamma rays) from a number of directions through a workpiece fault, the detector detects the workpiece attenuation of the ray information, through the computer image reconstruction of the collected data, in the form of a two-dimensional image to show the distribution of ray attenuation coefficients of the detected faults (and the density of the material into a linear relationship, so sometimes also interpreted as a density distribution map). Therefore, the CT image is sometimes interpreted as a density distribution map.)
Second, the scope of industrial use
CT imaging has a clear, intuitive, accurate unique advantages, the image does not overlap, you can get the object three-dimensional structural information, has a higher resolution, more suitable for quantitative analysis.
Currently, most of the industrial CT systems are only used for non-destructive testing and non-destructive quality assessment (detecting casting process defects such as porosity, shrinkage, sand entrapment, cold segregation, cracks, loosening, etc., or a variety of material defects such as bubbles, inclusions, cracks, debonding, delamination, etc.), and the CD series of industrial CT systems are technologically advanced. size measurement and density measurement), non-destructive reverse design and other design and process analysis and research purposes.
Three, the development of
1895, Roentgen discovered X-rays;
1917, Radon (G. Radon) to lay the foundation of mathematics;
1963, A.M. Cormack to determine the exact method of computation;
1970, G.N. Hounsfield developed the first medical CT machine;
The first medical CT machine;
The first medical CT machine;
The first medical CT machine;
The first medical CT machine. the first medical CT machine;
In 1983, ARACOR developed the first industrial CT machine;
In 1993, Chongqing University developed the first practical prototype of industrial CT in China.