Computed tomography (CT) offers an excellent method for determining the geometry of internal structures and is an indispensable tool for analyzing complex components, especially in industrial manufacturing, research and development. CT scans can be used to create detailed 3D models of an object's internal structures, enabling precise measurement and analysis without destroying the component. This is particularly advantageous for components with complex or hidden geometries, such as cavities, channels and layered structures, which are difficult to access with other inspection methods.
Functionality of CT-supported geometry determination
In computer tomography, the object is scanned with X-rays and numerous two-dimensional cross-sectional images are taken from different angles. These cross-sectional images are then reconstructed into a 3D volume that shows the complete internal structure of the component. This method enables exact dimensions and geometries to be recorded that can often only be measured to a limited extent using other testing methods. Even complex geometries or the smallest details can be precisely displayed and analyzed.
A particular advantage is the ability to precisely measure specific geometric features such as wall thicknesses, cavities, hollow spaces, diameters and surface structure. This high-resolution 3D capture provides insights into the internal geometry without having to cut open or damage the component.
Application areas of geometry determination by CT
Geometry determination by computer tomography is widely used in various industries and is particularly relevant in areas that require high precision and control over the structure of the components:
- Aerospace Industry: This is where the highest precision is required, especially for safety-critical components such as turbine blades, which can be analyzed for cavities, wall thicknesses and cracks in a CT scan.
- Automotive industry: CT is used to inspect internal structures of complex components such as engine blocks, transmissions or electronic components to ensure quality and reliability.
- Medical Technology: Implants and medical devices with complex internal structures can be precisely measured using CT to ensure both quality and accuracy of fit.
- Foundry Technology and Materials Science: The geometry determination of castings and materials makes it possible to detect and analyze cavities, pores and other production defects at an early stage, which supports quality control and optimization of manufacturing processes.
Possibilities of CT analysis for geometry determination
CT-supported geometry determination offers a variety of analysis options:
- Dimensional measurement and tolerance testing: The 3D data obtained allows precise measurement of the internal geometries and tolerance testing. This includes checking wall thicknesses, distance measurements and diameters.
- comparison with CAD data: A 3D CAD model of the component can be compared with the CT scan. Deviations between the actual component and the target state can be identified quickly and precisely using false color representations.
- Troubleshooting: By determining the geometry, internal defects such as pores, inclusions, cracks or deformations can be detected and analyzed.
- volume and surface analysis: Accurate volume and area calculations can be carried out, which are crucial for the testing and optimization of components
