Overview of Industrial CT Testing Standards

Industrial CT is the abbreviation of industrial computer tomography imaging technology. The imaging method is to perform a cross-sectional scan of the workpiece and perform digital processing to provide a two-dimensional image of the true reflection of the internal structure of the workpiece. After measuring enough two-dimensional images of the fault, a certain image reconstruction algorithm is used to process the image and obtain a three-dimensional model, This model can intuitively reflect whether there are defects in the workpiece, the accurate location of damaged defects, and the size, distribution, and shape of its internal structure. Industrial CT systems are generally limited by the type, shape, structure, and surface condition of the test specimen, and can obtain two-dimensional or three-dimensional images corresponding to the geometric structure, material composition, and density characteristics of the test specimen. They have been widely used in aerospace, aviation, weapons, automotive manufacturing, petroleum, electronics, machinery, new energy, archaeology, and other fields.

Since 1999, China has established multiple national standards, military standards, and industry standards for industrial CT testing. There are currently over 40 standards related to industrial CT testing, including 4 international standards (ISO), 8 American Society for Testing and Materials (ASTM) standards, 20 national standards (GB), 3 national military standards (GJB), and 12 industry standards (HB, QJ, WJ, etc.). The types of standards include technical guidelines, testing methods, equipment performance testing methods, etc.

We have compiled some standards for your reference:

The State Administration for Market Regulation and the National Standardization Administration of China, on the standards for CT non-destructive testing

GB/T37122-2018 Non destructive Testing - Industrial Computer Tomography (CT) Testing - Test Card for Maximum Detectable Steel Thickness

GB/T37158-2018 Non destructive Testing - Industrial Computer Tomography (CT) Testing - Test Method for Maximum Detectable Steel Thickness

GB/T37121-2018 Non destructive Testing - Industrial Computer Tomography (CT) - Crack Test Cards for Testing

GB/T37166-2018 Non destructive Testing - Industrial Computer Tomography (CT) Testing Methods for Composite Materials

GB/T36232-2018 Non destructive Testing of Welds - Industrial Computer Tomography (CT) Testing Method for Electron Beam Welded Joints

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standards for CT Non destructive Testing

GB/T36232-2018 Non destructive Testing of Welds - Industrial Computer Tomography (CT) Testing Method for Electron Beam Welded Joints

GB/T29071-2012 Non destructive testing - Industrial computer tomography (CT) testing methods for pyrotechnic devices

GB/T29034-2012 Non destructive Testing - Guidelines for Industrial Computer Tomography (CT)

GB/T29067-2012 Non destructive Testing - Industrial Computer Tomography (CT) Image Measurement Methods

GB/T29068-2012 Guide for Selection of Industrial Computer Tomography (CT) Systems for Non destructive Testing

GB/T29069-2012 Non destructive testing - Performance testing methods for industrial computer tomography (CT) systems

GB/T29070-2012 Non destructive Testing - General Requirements for Industrial Computer Tomography (CT) Testing

GB/T26835-2011 Non destructive testing instruments - General technical requirements for industrial X-ray CT equipment

GB/T26593-2011 Non destructive testing instruments - Performance testing methods for industrial X-ray CT devices

The General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China and the National Standardization Administration of China, on the standards for CT non-destructive testing

GB/T35839-2018 Non destructive testing - Industrial computed tomography (CT) density measurement methods

GB/T35390-2017 Non destructive Testing of Ammunition Density Industrial Computer Tomography (CT) Testing Method

GB/T35391-2017 Non destructive Testing - Industrial Computer Tomography (CT) - Spatial Resolution Test Cards for Testing

GB/T35386-2017 Non destructive Testing - Density Resolution Test Card for Industrial Computer Tomography (CT) Testing

GB/T35386-2017 Non destructive Testing - Density Resolution Test Card for Industrial Computer Tomography (CT) Testing

GB/T34365-2017 Terminology for Non destructive Testing - Industrial Computer Tomography (CT) Testing

The national standards, military standards, and industry standards for industrial CT testing in China all stipulate the requirements for industrial CT testing personnel to obtain relevant qualification certificates, such as GB/T36232-2018 "Non destructive testing of welds - Industrial computer tomography (CT) testing methods for electron beam welded joints" and GJB5312-2004. When it comes to specific training and certification, each industry has its own characteristics. For example, the aviation, aerospace, and non-destructive testing societies classify the industrial CT profession as radiographic testing and provide training and certification according to radiographic testing RT (CT); The military industry currently adheres to the GJB9712A-2008 standard, with industrial CT certified separately; The Society for Non destructive Testing divides industrial CT technology into categories such as castings and welds, while industries such as aviation, aerospace, and military do not have any technical categories.