Issue << content << High-Energy Computed Tomography for Additive Manufacturing of Critical Metal Products


DOI: 10.12737/12572

2015. Vol.18. No. 3, pp. 54-59

High-Energy Computed Tomography for Additive Manufacturing of Critical Metal Products

I. A. Vainberg, E. I. Vainberg, S. G. Tsyganov, V. B. Sidorin

The current state of digital additive technologies and areas of their application is analyzed in the paper.
The main sources and sizes of geometry errors as well as porosity of additive metal products are estimated. It is shown that post-processing of matching surfaces is necessary at assembling critical mechanical units containing additive parts.
Non-destructive testing of critical additive metal articles with complex internal structure does not conform to capabilities of traditional NDT methods; new NDT problems of additive parts are formulated.
A unique role of high-energy computed tomography is substantiated and experimentally confirmed; CT can become an important factor in further development of additive technologies by providing a feedback between a technology, an internal structure and performance abilities of the products.
 
Keywords: digital technologies, 3D printers, geometric errors, porosity, post-processing
References
  1. Vaynberg I. A., Vaynberg E. I., Tsyganov S. G., Sidorin V. B. MEGATECH, 2014, no. 4, pp. 40–51 (part 1); 2015, no. 1, pp. 44–54 (part 2) (in Russ.).
  2. Vaynberg I. A., Vaynberg E. I. V mire NK [NDT World]. 2005, no. 3, pp. 38–41 (in Russ.).
  3. Vaynberg I. A., Vaynberg E. I. V mire NK [NDT World]. 2011, no. 2, pp. 20–25 (in Russ.).
 
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