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Numerical Analysis of the Transient Thermal Response of Subsurface Defects

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Photoacoustic and Photothermal Phenomena II

Part of the book series: Springer Series in Optical Sciences ((SSOS,volume 62))

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Abstract

The transient step photothermal technique described in [1] has been applied to the evaluation of plasma sprayed zirconia coatings. Analysis of the technique has shown both theoretically and experimentally that the surface thermal transients were the result of thermal wave interference effects. In the case of a coating substrate adhesion defect, the Laplace inversion of the surface temperature expression for a 3-layer thermal wave interference model is non-trivial [2]. We have employed a numerical method of solution in assisting the quantification of non-destructive tests.

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References

  1. S.K. Lau, DP. Almond, P.M. Patel; “Transient Thermal Wave Techniques...”; Submitted 6th Int. Conf. Photoacoustics.

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  2. P.M. Patel and D.P. Almond; Appl. Phys. B 42 p9-ll (1987).

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  3. G.D. Smith, “Numerical Solution of Partial Differential Equations”. Pub. Oxford Univ. Press (1965).

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  4. A.C Tarn and H. Sontag; Appl. Phys. Lett. 49(26) pl761–63 (Dec 1986).

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© 1990 Springer-Verlag Berlin Heidelberg

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Lau, S.K., Almond, D.P., Patel, P.M. (1990). Numerical Analysis of the Transient Thermal Response of Subsurface Defects. In: Murphy, J.C., Spicer, J.W.M., Aamodt, L.C., Royce, B.S.H. (eds) Photoacoustic and Photothermal Phenomena II. Springer Series in Optical Sciences, vol 62. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-46972-8_18

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  • DOI: https://doi.org/10.1007/978-3-540-46972-8_18

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-662-13795-6

  • Online ISBN: 978-3-540-46972-8

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