Non-Destructive Inspection of AM parts by CT


This manufacturing knowledge Quiz was created in collaboration with TPW Prüfzentrum GmbH.
Thomas Kleinteich.

Here you can participate in a manufacturing quiz, with which you can check your knowledge about this event item. We will announce the winner of this quiz after fourteen days by email to all event participants. The best entry wins a visit to TPW and a free scan of something the winner proposes (may be something private of course), dimensions will have to be coordinated with TPW.

Below are the names of the entries:
1) Bart de Vries (ASML) WINNER
2) Jiri Rados (Frenckengroup)
3) Dylan Sikkelbein (HitTech)
4) Tom Raasveld (ASML)
5) Wouter Bunthof (Frenckengroup)
6) Giorgos Zografos(Frenckengroup)
7) Sander Broers(ASML)
8) Karthik Panineni(Frenckengroup)
9) Anne Berkvens(ASML)

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Non-Destructive Inspection of AM parts by CT

(1) Which parameter, according to Lambert-Beers-Law, has the strongest impact on the captured intensity of x-rays on the detector after they passed through a part?(Vereist)
2) What can a 2D-x-ray image of an AM-part be used for?(Vereist)
(3) What kind of information does the CT-scanner hardware capture?(Vereist)
(4) How shall the part be placed in the CT-scanner?(Vereist)
(5) What is a voxel?(Vereist)
(6) A foreign particle, that has higher x-ray attenuation as the base material of the inspected part appears in a CT dataset as:(Vereist)
(7) The detector of a CT scanner has 2.000 x 2.000 pixels. In which range will the resulting voxel size of the reconstructed CT dataset be for a part that has the dimensions: 250 mm x 130 mm x 70 mm?(Vereist)
(8) Can a gas pore with a diameter of app. Ø 5 µm be detected in a CT scan with a voxel size of 50 µm?(Vereist)
(9) To safe inspection costs, two samples are placed in one CT scan. The resulting voxel size of the scan is 60 µm and the dataset for each part is 1,2 GB large. How large would be the resulting dataset for one part, if the parts are scanned separately at a voxel size of 30 µm?(Vereist)
10) What could be the advantage of using CT when inspecting metal 3D printed density cubes as compared to classic metallographic inspections?(Vereist)

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