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Industrial applications of dual X-ray energy computed tomography (2X-CT)

: Fuchs, T.; Keßling, P.; Firsching, M.; Nachtrab, F.; Scholz, G.


Büyüköztürk, O.:
Nondestructive Testing of Materials and Structures : Proceedings of NDTMS-2011, Istanbul, Turkey, Mai 15-18, 2011
New York: Springer, 2012 (RILEM Bookseries 6)
ISBN: 978-94-007-0723-8
ISBN: 978-94-007-0722-1
International Symposium on Nondestructive Testing of Materials and Structures (NDTMS) <2011, Istanbul>
Fraunhofer IIS ()

The Fraunhofer Development Center X-ray Technology (EZRT) developed an industrial dual-energy X-ray Computed Tomography (2X-CT) system in order to obtain quantitative 3-D information on the material inside arbitrary samples. The goal was to develop an easy-to-use dual-energy solution that can be handled by the average industrial CT operator without the need for a specialist. First, an introduction is given of the physical background of the method that was realized. Also, the strengths and weaknesses thereof are discussed. Next, the results of 2X-CT measurements from different fields of investigations are presented: measurements with vegetables, e.g. potatoes or bananas, quantitative assessments of bore cores in geological applications, and studies of carbon fibre reinforced plastic (CFRP). In summary, it is shown that 2X-CT can provide accurate information about the composition of a wide range of materials and objects. On the other side, there is still the need for furt her optimization of X-ray parameters in order to increase quantitative accuracy, and for extending the range of materials which can be assessed by industrial 2X-CT.