Örebro Studies in Technology 73 I
ÖREBRO 2016 2016AN
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issn 1650-8580 isbn 978-91-87789-10-6Only a Shadow
Industrial Computed Tomography Investigation,
and Method Development, Concerning Complex
Material Systems
ANTON JANSSON
Mechanical Engineering
antonjanssonreceived his M.Sc. in Engineering Physics from Karlstad University, Sweden, in 2014. During 2014 to 2016 he was enrolled as a Ph.D. student at the School of Science and Technology, Mechanical Engineering depart-ment, at Örebro University, Sweden. Anton’s main research interest lies in computed tomography method development.
Computed tomography is a non-destructive testing method that relies on X-ray light to build 3D volumes of test samples. The volumes can be used to study the samples regarding, for example, material integrity and dimensions. Computed tomography stands apart from other non-destructive testing met-hods in that it can measure internal features in samples without damaging the samples. The ability of computed tomography to perform such measu-rements makes it an ideal tool for investigation of additive manufactured parts, whom can possess controlled internal features. This thesis concerns the use of industrial computed tomography for material investigations and measurements of internal features.
The contributions of this thesis are increased knowledge about complex material systems fabricated using additive manufacturing. Both concerning porosity and internal structures in a novel composite material, and the dimensional accuracy of a method that fabricates parts using selective laser melting. The thesis also concerns the measurement consistency of computed tomography when investigating samples that are ill suited for computed tomography investigations. A dual-energy tool is developed and employed to increase the measurement consistency and make more measurements available.
