Application of micro-CT in composite material inspection

micro-CT(microfocus computed tomography) system is increasingly used in composite materials inspection. Composite materials, as the name, are made of two or more materials with different properties and shapes prepared through a composite process. The comprehensive performance is better than the original materials. It has the advantages of light weight and high strength. Composite materials have better advantages than ordinary single materials , their applications are becoming more and more widespread, such as: aerospace, electronic and electrical, automotive and other fields, in military and civilian applications all play an important role.
However, due to its unique structural characteristics and the influence of factors such as process technology during the manufacturing process, composite materials will inevitably produce defects and damage, which will affect the performance and structural integrity of composite materials and reduce their use life. It is crucial to use metrology-based industrial micro-CT systems to detect composite materials. 

Industrial micro- CT system is intuitive because of its microfocus CT images. The grayscale of the image corresponds to the workpiece material, geometric structure, composition and density. It can not only obtain information such as the shape, location and size of the defect, but also determine the location of the defect when combined with density analysis technology. The nature of the defect space positioning, quantitative and comprehensive qualitative problems that have long troubled non-destructive testing(NDT) personnel has a more direct solution. LINAC high energy CT system images fully reproduce the composition characteristics of the large workpiece material. Therefore, three-dimensional micro-CT(microfocus computed tomography) images are of practical significance for the detection and analysis of complex structural parts, and dual-source dual-detector CT systems can be combined with CAD, CAM and other manufacturing technologies to form reverse engineering. These advantages are not available in other non-destructive testing（NDT） technologies, so micro-CT system is a common tool for testing composite materials.

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