Three Dimensional Voxel Scale Calibration Methods for Automated Micro-CT Inspection
Calibrating micro-CT voxel scale with certified ball-bar phantoms bounds geometric magnification drift and ensures repeatable automated void sizing.
ISO 10360-8
Metrology Standard
Quality acceptance testing for non-contact three-dimensional coordinate measuring systems follows standardized testing procedures to quantify probing errors and structural measurement capabilities. Adhering to ISO 10360-8 provides a framework for testing optical distance sensors used in dimensional verification of precision electronic assemblies and industrial parts. This international standard establishes procedures for calculating probing size errors and probing form errors using calibrated reference spheres and planar test standards.
The application boundary of this standard excludes contact tactile probing systems and X-ray computed tomography systems governed by alternative sub-parts of the same standards family.
Performance Verification
Optical sensor evaluation under this framework requires measuring calibrated optical spheres across multiple positions within the system work volume. The test procedures defined in ISO 10360-8 compare measured spatial point clouds against traceably calibrated sphere diameters and center-to-center artifact distances. Dispersion of surface points determines the form error value, while distance discrepancies between calculated centers determine the length measurement error of the system.
Environmental conditions, such as ambient temperature fluctuations and ambient lighting changes, are tightly controlled during acceptance testing to isolate intrinsic sensor errors. Verifying sensor performance according to these standardized metrics ensures that optical inspection systems meet agreed specifications during commercial procurement and installation audits.
Evaluation Limit
Test artifacts must possess surface reflectance characteristics that match intended operational materials without causing sensor saturation. Standard compliance testing verifies spatial repeatability across full field-of-view limits, identifying optical distortion zones near lens edges. System performance metrics derived under this standard form the legal reference basis for equipment acceptance contracts.