Research on Industrial Computed Tomography System and Image Processing Technology for Nondestructive Testing of Composite with Large Size

Nondestructive testing of the carbon fiber-epoxy composite is facing great challenges because of the existence of carbon fiber/epoxy interfaces in the composite. Industrial computed tomography (CT) can acquire three-dimensional information on an object from a great quantity of digital radiography (DR) images, and thus industrial CT technology is considered as a promising tool to detect defects of the carbon fiber-epoxy composite. In this study, an industrial CT system suitable for detecting the carbon fiber-epoxy composite with large size was designed and manufactured. The industrial CT system could be used to implement the defect detection of the carbon fiber-epoxy composite, such as hole and delamination defects with submillimeter size, where the spatial information of CT image was much richer than that of DR image.