Verification of Computed Tomograph for Dimensional Measurements
[ 1 ] Instytut Technologii Mechanicznej, Wydział Inżynierii Mechanicznej, Politechnika Poznańska | [ 2 ] Wydział Inżynierii Mechanicznej, Politechnika Poznańska | [ P ] pracownik | [ SzD ] doktorant ze Szkoły Doktorskiej
2022
rozdział w monografii naukowej / referat
angielski
- computed tomography
- verification
- standard
EN Radiation, is one of the ways of energy transfer by emission of electromagnetic waves or particles from a radioactive source. X-ray images make it possible to observe the internal structure of virtually any object and the only limitation is the ability to overexpose it. Tomography is a technique that allows imaging on the basis of sections or cross-sections obtained by means of a wave penetrating the object. The devices used in X-ray computed tomography consist of four basic components: the X-ray tube, the detector, the manipulator, and shielding to protect against the negative effects of X-rays on the operator. Measurements of geometric quantities carried out with a CT scanner are classified as coordinate measurements, and they are subject to the same conditions as, for example, contact or optical measurements carried out with other coordinate systems. Since that, the methods of its verification are derived from the methods applied to other devices operating in this technique. In the paper a metrological approach to computed tomography from verification and reverification point of view was presented. Documents related to it were briefly described and a practical example of inspection performed with standards was presented.
16.04.2022
142 - 155
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