Published August 22, 2012 | Version 5833

Evaluation of Ultrasonic C-Scan Images by Fractal Dimension

Description

In this paper, quantitative evaluation of ultrasonic Cscan images through estimation of their Fractal Dimension (FD) is discussed. Necessary algorithm for evaluation of FD of any 2-D digitized image is implemented by developing a computer code. For the evaluation purpose several C-scan images of the Kevlar composite impacted by high speed bullet and glass fibre composite having flaw in the form of inclusion is used. This analysis automatically differentiates a C-scan image showing distinct damage zone, from an image that contains no such damage.

Files

5833.pdf

Files (253.7 kB)

Name Size Download all
md5:38e122789354e95caa0c0ea14cf9eb24
253.7 kB Preview Download

Additional details

References

  • B. B. Mandelbrot, and J. W. Wallis, "Fractional Brownian Motions," Fractional Noises and Applications, SIAM review, 10: 422-437, 1968.
  • B. B. Mandelbrot, "The Fractal Geometry of Nature," W. H. Freeman, San Francisco, CA, 1982.
  • A. P. Pentland, "Shading into Texture," Artificial Intelligence, 29:147-170, 1986.
  • T. Lundhal, W. J. Ohley, S. M. Kay, and R. Siffert, "Fractional Brownian motion: A Maximum Likehood Estimator and Its Application to Image Texture," IEEE transactions on Medical Imaging, 5:152-161, 1986.
  • C. C. Chen, J. S. Deponte, and M. D. Fox, "Fractal Feature Analysis and Classification in Medical Imaging," IEEE transactions on Medical Imaging, 8:133-142, 1989.
  • V. Bhatt, P. Munshi, and J. J. Bhattacharjee, "Application of Fractal Dimension for Nondestructive Testing," Materials Evaluation, 49:1414-1418, 1991.
  • P. Munshi, M. Maisl, and H. Reiter, "Quantitative Assessment of Radiographic Images Using Region-of-Interest Fractal Graphs," Nondestructive Testing and Evaluation, 11:33-42, 1994.
  • P. Munshi, M. Maisl, and H. Reiter, "A New Method of Characterizing Patterns in X-ray Tomographic Images of a Composite Specimen," Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 108:205- 212, 1996.
  • C. E. Shannon, and W. Weaver, "The Mathematical Theory of Communication," Univ. Illinois press. Chicago, 1963. [10] PCUS11 Ultrasonic P/R Board Manual, Doc # EBD003-1, Fraunhoffer Institute for Non-Destructive Testing, Saarbruecken, Germany, 1999. [11] QUT Ultrasonic testing software Manual, Version 4, Quality Network (QNET) Pvt. Ltd, 1999. [12] H. Charles Romesburg, "Cluster Analysis for Researchers," Lulu Press, North Carolina, United States of America, 2004.