[4B6] Determination and application of localised measurement confidence in X-ray computed tomography (CT) for the non-destructive evaluation (NDE) of metallic powders and parts
T Lowe¹, S Johnston¹, A Bowfield¹, P Westenberger², S Alderton³, K Pickup⁴, S Glanvill⁵ and W Sun⁶
¹Aletheia Imaging Solutions Ltd, UK
²Thermo Fisher Scientific, France
³Waygate Technologies, Baker Hughes Digital Solutions GmbH, Germany
⁴BAE Systems Air, UK
⁵Renishaw plc, UK
⁶National Physical Laboratory, UK
X-ray CT has become firmly established as an NDE technique in both research and industrial applications. Despite its widespread use in the aerospace, automotive and nuclear sectors, there are still many questions regarding the consistency and measurement confidence of safety/mission-critical parts. These questions can be answered using reference quality indicators (RQIs) that mimic the component in question and contain known features for determining measurement confidence. This presentation will demonstrate how RQIs can be used to quantitatively characterise localised changes in the spatial resolution and measurement confidence of the reconstructed volume. The application of local spatial resolution will then be demonstrated for the characterisation of powders and component features using X-ray CT.
