Meaning
Industrial computed tomography provides three-dimensional visualization of internal defect geometries inside cast or additive parts without altering the physical structure. Performing ct non-destructive testing allows quality assurance engineers to locate internal voids, cracks and density variations that escape surface inspections. This radiographic inspection is particularly useful for verifying the integrity of safety-critical components in aerospace applications.
The technique becomes impractical when the part thickness or density exceeds the penetration capability of the x-ray source.
Defect Detection
High-resolution scans capture microscopic internal porosity and manufacturing inconsistencies in complex geometries. Additive manufacturing parts often contain internal channels that cannot be measured using mechanical probes. These scans generate point clouds that are compared directly against the original engineering drawings.
Throughput Constraint
Scanning cycle times and data reconstruction speeds restrict this methodology to low-volume or audit-based inspections. High-volume assembly lines cannot accommodate the multi-minute acquisition times required for high-resolution scans. Consequently, companies use this testing primarily for first-article inspection or failure analysis.
Equipment Calibration
Standard phantom cylinders containing spheres of known sizes are scanned regularly to verify spatial resolution and contrast accuracy. Maintaining these reference baselines ensures that measurement drift is detected before it affects product acceptance decisions. Regular hardware audits prevent false passes on the assembly line.
