Residual Stress and Damage Evolution in TBCs by Optical Method

Abstract:

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In recently years, ruby fluorescence spectroscopy has been demonstrated as a powerful technique for monitoring residual stress evolution in the thermally grown oxide scale in thermal barrier coatings(TBC) systems. The measured residual stresses, in turn can be used to monitor evolution of damage in the coatings. Effective use of this technology for real time damage monitoring require the identification of strength in measured stresses that can be used as indicators of damage evolution.the present work focuses on studying the evolution of residual stresses in TBC systems during oxidation. The coating are atmospheric plasma sprayed (APS), the residual stress were measured at different oxidation time and to identify critical features so as to be used as indicators of failure in TBCs.

Info:

Periodical:

Key Engineering Materials (Volumes 324-325)

Edited by:

M.H. Aliabadi, Qingfen Li, Li Li and F.-G. Buchholz

Pages:

1047-1050

DOI:

10.4028/www.scientific.net/KEM.324-325.1047

Citation:

F. H. Wang et al., "Residual Stress and Damage Evolution in TBCs by Optical Method", Key Engineering Materials, Vols. 324-325, pp. 1047-1050, 2006

Online since:

November 2006

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Price:

$38.00

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