The construction of the METAS-Computed-Tomography-System (METAS-CT) is finished. Control software for the X-ray tube, the flat panel detector, the positioning system, and the measurement system consisting of 8 interferometers, 5 straightness sensors, 3 index sensors, and 30 temperature probes, is in operation. A reconstruction and analysis workstation as well as commercial software for CT simulation (aRTist, BAM), reconstruction (CERA, Siemens) and data analysis (VG Studio MAX, Volume Graphics) are implemented and ready for use.
The planned specifications were met:
- Voxel-size: < 1 μm3
- Measurement volume: > 100 mm x 100 mm x 100 mm
- Uncertainty: < 2 μm + 1x10-5 L (unidirectional)
Various demonstration measurements were performed. Project results were published.
METAS-CT enables new measurement capabilities, especially characterisation of small workpieces with internal geometries and nominal-actual comparisons with corresponding CAD models.