Discrete Tomography Methods for Nondestructive Testing
The industrial nondestructive testing (NDT) of objects seems to be an ideal application of discrete tomography. In many cases, the objects consist of known materials, and a lot of a priori information is available (e.g., the description of an ideal object, which is similar to the actual one under investigation). One of the frequently used methods in NDT is to take projection images of the objects by some transmitting ray (e.g., X- or neutron-ray) and reconstruct the cross sections. But it can happen that only a few number of projections can be collected, because of long and/or expensive data acquisition, or the projections can be collected only from a limited range of directions. The chapter describes two DT reconstruction methods used in NDT experiments, shows the results of a DT procedure applied in the reconstruction of oblong objects having projections only from a limited range of angles, and, finally, suggests a few further possible NDT applications of DT.
KeywordsTurbine Blade Line Detector Detector Pixel Neutron Radiography Discrete Tomography
Unable to display preview. Download preview PDF.
- 4.Herman, G. T., Kuba, A. (nteds.): Discrete Tomography: Ffoundations, Algorithms, and Applications. Birkhauser, Boston, MA (1999).Google Scholar
- 5.Kak, A.C., Slaney, M.: Principles of Computerized Tomographic Imaging. IEEE Press, New York, NY (1987).Google Scholar
- 15.Zscherpel U., Osterloh, K., Ewert, U.: Unschärfeprobleme beim Einsatz digitaler Detektoren in der Durchstrahlungsprüfung. DGZfP Annual Meeting (2003). With associated web site http://www.ndt.net/article/dgzfp03/papers/v22/v22.htm.