3D COMPUTED TOMOGRAPHY RECONSTRUCTION FROM MICRO-FOCUS X-RAY SYSTEM USING FILTERED BACK-PROJECTION

Abstract

Traditional quality checks in manufacturing rely on visual inspection through microscopes, a method prone to human errors and will be a time-consuming process. To address these limitations, irradiating X-ray systems have been widely adopted for 2-dimensional high precision checks on materials and surface defects. However, their inability to conduct 3D inspections has led to the exploration of high precision micro-focus X-ray systems. This paper presents the utilization of a micro-focus X-ray system capable of producing high-resolution images for 3D reconstruction. The micro-focus X-ray source used provides a focus spot size as small as 5µm, which will be able to generate detailed images for 3D tomographic reconstruction. Beyond the small focus spot, meticulous attention has been given to the geometry alignment of the experimental set-up to ensure the accuracy of the 3D data. The proposed 3D Computed Tomography aims to inspect the depth and inner components of the objects, overcoming the limitations of traditional inspection. The reconstruction process employs the Filtered Back Projection algorithm, known for its efficacy in transforming X-ray projections into detailed 3D representations.