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Proceedings Paper

Quantitative nondestructive evaluation of delamination damage in CFRP pressure vessels for space use
Author(s): Takahide Sakagami; Shiro Kubo; Yukio Hyodo; Toshio Ogasawara; Takashi Nishimura; Daisuke Imanishi; Matt Schmitt
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Paper Abstract

Pulse heating infrared thermography method was applied for NDE of low energy impact delamination damages in test sample of CFRP pressure vessels employed for space. Size and depth of delamination damage in CFRP pressure vessel samples were quantitatively determined from sequential temperature distribution data after pulse heating using data processing methods developed by the present authors. The Fourier analyses were applied to the temperature decent curves after pulse heating obtained at each pixel of the sequential thermal images. Coefficients of the Fourier series were calculated from temperature decent curves, and they were effectively used to determine defect parameters such as the defect area and the defect depth. The feasibility of the proposed nondestructive inspection techniques was demonstrated by the experimental investigations using CFRP pressure vessel test samples.

Paper Details

Date Published: 18 April 2006
PDF: 10 pages
Proc. SPIE 6205, Thermosense XXVIII, 62051A (18 April 2006); doi: 10.1117/12.665388
Show Author Affiliations
Takahide Sakagami, Osaka Univ. (Japan)
Shiro Kubo, Osaka Univ. (Japan)
Yukio Hyodo, Japan Aerospace Exploration Agency (Japan)
Toshio Ogasawara, Japan Aerospace Exploration Agency (Japan)
Takashi Nishimura, Osaka Univ. (Japan)
Daisuke Imanishi, Osaka Univ. (Japan)
Matt Schmitt, Purdue Univ. (United States)

Published in SPIE Proceedings Vol. 6205:
Thermosense XXVIII
Jonathan J. Miles; G. Raymond Peacock; Kathryn M. Knettel, Editor(s)

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