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Proceedings Paper

Advances in digital speckle radiography
Author(s): Stephen G. Grantham; John E. Field
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Paper 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.

Paper Details

Date Published: 20 June 2002
PDF: 9 pages
Proc. SPIE 4777, Interferometry XI: Techniques and Analysis, (20 June 2002); doi: 10.1117/12.472215
Show Author Affiliations
Stephen G. Grantham, Univ. of Cambridge (United Kingdom)
John E. Field, Univ. of Cambridge (United Kingdom)

Published in SPIE Proceedings Vol. 4777:
Interferometry XI: Techniques and Analysis
Katherine Creath; Joanna Schmit, Editor(s)

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