Through a CT measurement, the geometry of molded parts can be accurately ascertained. This enables widely-varying dimensional measurements to be precisely performed, for example of:
Internal structures such as cavities are also hereby detected. Furthermore, the wall thicknesses of a component can be automatically determined, color-coded and compared with nominal wall thicknesses. The nominal/actual comparison enables the comprehensive adjustment of the CT volume data of the measurement object with a reference object. This can be, for example, a CAD model or a reference measurement. In the reverse direction, a 3D model can be exported from a CT measurement, for example for reverse engineering.
Pore, cavity and inclusion analytics
The CT characteristic of showing the internal structure of the material enables defects such as cracks, cavities or pores to be detected and quantified. This includes the determination of:
- defect volume
- positions of the defects in the sample
- geometric properties (diameter, volume, sphericity) of the individual defects
Analog to this, these evaluation possibilities can be applied to inclusions such as foreign particles or filling materials. A further application example is the characterization of the structure of foams.
In fiber composites, the individual reinforcing fibers can be resolved by means of CT. This opens up a comprehensive characterization of the materials as regards, for example:
- fiber length and diameter, ratio length/diameter (aspect ratio)
- fiber distribution
- fiber volume proportion
- fiber orientation
Furthermore, morphological features, e.g. the surface structure of fibers, fiber undulations or the vascular structure in wood fibers, can also be detected.
In situ CT
In contrast to conventional CT applications, for in situ CT examinations not only the steady state of an examination object is detected; several successive CT scans dynamically follow the object's behavior whilst it is subjected to an external load. This can be, for example, a mechanical, thermal or corrosive loading.
The system Procon X-Ray CTAlphaDuo, with its large measuring chamber, two x-ray tubes and two detectors, can be very flexibly utilized. On the one hand, large objects with a diameter of up to 500 mm can be detected and on the other hand, resolutions down into the lower micrometer range are possible.
- 240 kV micro-focus and 225 kV high-power x-ray tube
- 4MP detectors
- Samples: Diameter max. 500 mm, height max. 400 mm, weight max. 25 kg
- In situ stage for 4-point bending tests
- Z-shaft for further in situ structures (e.g. fluids, pressure, etc.)
Max. scan volume dependent on recording mode:
- 500 mm diameter, 250 mm height
- 250 mm diameter, 400 mm height
- Minimum voxel size: < 1 μm