Advances in digital speckle radiography

Stephen G. Grantham; John E. Field

doi:10.1117/12.472215

20 June 2002 Advances in digital speckle radiography

Stephen G. Grantham, John E. Field

Proceedings Volume 4777, Interferometry XI: Techniques and Analysis; (2002) https://doi.org/10.1117/12.472215
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

Digital Speckle Radiography (DSR) is a measurement technique which uses flash X-rays combined with the computer analysis used in digital speckle photography. The technique has proven to be particularly powerful in the study of internal deformation fields, in both 2- and 3-dimensions, in high-speed events such as ballistic and explosive studies. In this paper, we present details of a new stereoscopic DSR apparatus. A new approach to the pre-processing of digitized radiographs prior to the displacement analysis results in a significant improvement in accuracy. An accurate determination of the scaling factor between the sample and the radiograph is demonstrated, and corrections for the Gaussian intensity profile of the X-ray beam included.

Citation Download Citation

Stephen G. Grantham and John E. Field "Advances in digital speckle radiography", Proc. SPIE 4777, Interferometry XI: Techniques and Analysis, (20 June 2002); https://doi.org/10.1117/12.472215

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