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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 9 — Mar. 20, 2010
  • pp: 1494–1502

Reconstruction and analysis of pulsed thermographic sequences for nondestructive testing of layered materials

J. C. Ramirez-Granados, G. Paez, and M. Strojnik  »View Author Affiliations


Applied Optics, Vol. 49, Issue 9, pp. 1494-1502 (2010)
http://dx.doi.org/10.1364/AO.49.001494


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Abstract

We develop a heat transfer model to reconstruct pulsed thermographic data of layered objects. One of its salient features is its incorporation of normalized variables for a generalized approach to such problems. Additionally, we establish a methodology to determine the spatial and temporal limits of the data reconstruction process. Moreover, we describe an effective nondestructive technique for detecting and characterizing internal defects in multilayer objects. This inspection technique is verified on the construction of physical models and their examination. The depth, transverse dimensions, and front-surface shape of the detected defects are straightforwardly obtained from 3D depthgrams.

© 2010 Optical Society of America

OCIS Codes
(100.3190) Image processing : Inverse problems
(110.3080) Imaging systems : Infrared imaging
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(110.4155) Imaging systems : Multiframe image processing

ToC Category:
Image Processing

History
Original Manuscript: August 31, 2009
Revised Manuscript: January 30, 2010
Manuscript Accepted: February 3, 2010
Published: March 10, 2010

Citation
J. C. Ramirez-Granados, G. Paez, and M. Strojnik, "Reconstruction and analysis of pulsed thermographic sequences for nondestructive testing of layered materials," Appl. Opt. 49, 1494-1502 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-9-1494

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