2015. Vol.18. No. 3, pp. 54-59
High-Energy Computed Tomography for Additive Manufacturing of Critical Metal Products
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
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