Table of Contents
Beam hardening artifacts are common issues in industrial computed tomography (CT) inspections. These artifacts can obscure details and reduce the accuracy of defect detection. This article presents a real-world case study where these artifacts were effectively addressed.
Background of the Inspection
An industrial component made of steel was subjected to CT scanning to identify internal flaws. The initial scans revealed significant beam hardening artifacts, which compromised the clarity of the images and hindered accurate analysis.
Challenges Faced
The primary challenge was the presence of dense materials causing polychromatic X-ray beams to become hardened. This resulted in streaks and dark bands across the images, making it difficult to distinguish between real defects and artifacts.
Solutions Implemented
The team applied several strategies to mitigate beam hardening effects:
- Hardware adjustments: Using filters to pre-harden the beam before it interacted with the object.
- Software corrections: Implementing beam hardening correction algorithms during image reconstruction.
- Material segmentation: Differentiating dense regions to apply targeted corrections.
Results and Outcomes
After applying these measures, the CT images showed a significant reduction in artifacts. The internal features of the component became clearer, enabling accurate defect detection and assessment. The case demonstrated the effectiveness of combined hardware and software solutions in industrial CT inspections.