For some time, BJB has been operating its x-ray computed tomography laboratory for its own purposes. This innovative service and technology is offered also to other companies. The unique system can accommodate any parts from a wide variety of materials up to a height of 750 mm, a diameter of 265 mm and a weight of 50kg. Most importantly, we can measure with a reproducible accuracy of up to +-5 um and can recognize details down to one micrometer.
BJB’s, due to our engineering expertise, has better control of the quality and safety of materials, along with the parts and components before the start of series production. We now provide our innovative CT solutions and cost-efficient services to other companies.
Our CT Laboratory: Layer by Layer 3D Views
X-Ray computed tomography is familiar to most from a medical perspective. But it is also increasingly gaining ground in the industrial sector as a non-destructive analysis technology for the internal and external geometries of any test samples made of plastic, metal, ceramics, or other materials.
The system in our CT laboratory provides internal views layer by layer via a 3D volume model and provides detailed information, even for complex assemblies. Each of these details can be closely examined. Weak points and errors can be clearly identified. For instance:
- Weak points and errors can clearly be identified
- Dimensional tolerances, in incorrect, can be identified immediately
- Were any components deformed during product assembly?
- Are there voids in injection-molded plastic components were there should not be?
A CT analysis answers these and many other questions. Precise internal views give designers important information and speed up the product development process considerably. From dimensional measurements to the initial sample test report, this method also shortens the approval process.
From a technical point of view, computed tomography involves the computation of a three-dimensional volume model of the test object from a large number of two-dimensional x-ray images by means of complex mathematical calculations. This volume model consists of small individual volume elements, so-called voxels, which contain relative density information on the test object, thereby providing information on all external and internal geometries
The primary menu below provides an overview of the various analysis methods available:
- Radiography Test: A simple x-ray image can help to solve many issues. Do you have components or assemblies which you would like to examine by non-destructive means? It is possible, for example, to carry out assessments of assembly situation
- Slice Analysis: Tomographic slices enable a test piece to be examined slice by slice. The system calculates slices of a certain thickness through the test piece at specific intervals.
- Defect Analysis: Air pockets in plastic parts are usually unwelcome. The resultant weakening of the material causes the plastic to break or leads to a reduction in dielectric strength. Through the automatic identification of imperfections in a test piece, it is possible to make a very rapid assessment of the distribution and porosity of the test piece. Defects are displayed in colour in the volume model.
- Wall Thickness Analysis: In order to save on material, plastic parts are being designed with ever thinner walls. Wall thickness analysis can be performed to investigate the wall thicknesses of your components. On a model of your test piece, the wall thickness is analysed with an angle of aperture to be determined and is displayed in a false-colour representation of the test piece.
- Target-Actual Comparison: The target-actual comparison results from the superimposition of the measured volume model or surface model and the CAD dataset from your design department. The model obtained from the test piece is superimposed on the CAD model by means of a specific alignment logic. In the second step, the deviation between the model obtained and the CAD specification is calculated and displayed via a false-colour model of the test piece. The colours represent a certain deviation on the basis of a freely selectable scale.
- Measurement: Measurement is done for CAD-referenced measurement, ISTR-Initial Sample Test Report, and Creation of surface models / Reverse Engineering.
- Service Portfolio & Measurement: The system can accommodate any parts from a wide variety of materials up to a height of 750 mm, a diameter of 265 mm and a weight of 50 kg. We can measure with a reproducible accuracy of up to +-5 μm and can recognize details down to one micrometre.
To contact an expert at BJB who can help you learn more, please contact our CT Specialists! They look forward to assisting you.