Identification of Displacement Field by X-Ray CT

Abstract:

Article Preview

A material testing methodology is investigated in line with non-invasive manner using XRay CT images for characterizing biological tissues. Three-dimensional digital image volumes are generated for initial and loaded states. Tentative displacement field is represented by basis function of B-spline. Unknown parameters included in the functions are identified through an inverse problem minimizing error in terms of pixel intensity between actual deformed image volume and virtual one according to the tentative displacement field of B-spline. A constraint of incompressibility affects well for stable and prompt solution search. The proposed methodology is demonstrated in identification problem of three-dimensional displacement field by using an experimental data of compressive specimen.

Info:

Periodical:

Key Engineering Materials (Volumes 326-328)

Edited by:

Soon-Bok Lee and Yun-Jae Kim

Pages:

765-768

DOI:

10.4028/www.scientific.net/KEM.326-328.765

Citation:

N. Yoshikawa et al., "Identification of Displacement Field by X-Ray CT", Key Engineering Materials, Vols. 326-328, pp. 765-768, 2006

Online since:

December 2006

Export:

Price:

$35.00

[1] T. C. Chu, W. F. Ranson, M. A. Sutton and W. H. Peters. Experimental Mechanics Vol. 25 (1985), p.232.

[2] H. A. Bruck, S. R. McNeill, M. A. Sutton and W. H. Peters III. Experimental Mechanics Vol. 29 (1989), p.261.

[3] B. K. Bay, T. S. Smith, D. P. Fyhrie and M. Saad. Experimental Mechanics Vol. 39 (1999), p.217.

[4] Y. Wang and A. M. Cuitino. International Journal of Solid and Structures Vol. 39 (2002), p.3777.

[5] P. Cheng, M. A. Sutton, H. W. Schreier and S. R. McNeill. Experimental Mechanics Vol. 42 (2002), p.344.

[6] W. H. Press, B. P. Flannery, S. A. Teukolsky and W. T. Vetterling: Numerical Recipes, The Art of Scientific Computing (Cambridge University Press, U. S. A. 1986). X1� X2� X3� 2. 0 1. 0 1. 5 �PP@�.

DOI: 10.2307/1269484

In order to see related information, you need to Login.