Paper Title:
Nondestructive Detection of Delamination of Thermally Sprayed Material Using ESPI
  Abstract

Detection of delamination of a thermally sprayed coating on an SUS304 substrate was carried out nondestructively using electronic speckle pattern interferometry (ESPI) method in both static and cyclic tests at T=298 K and 873 K. Results showed that the surface strain of the coating becomes smaller than that of the substrate when delamination occurs from the interface of the substrate. Two parameters of critical strain of ε c and ε f, which correspond respectively for the static test and the cyclic test, are introduced to evaluate the existence of delamination according to the ε- σ s and ε-N curve. It is considered possible to evaluate the occurrence of delamination in cyclic tests using the static critical strain of ε c, instead of ε f.

  Info
Periodical
Key Engineering Materials (Volumes 326-328)
Edited by
Soon-Bok Lee and Yun-Jae Kim
Pages
999-1002
DOI
10.4028/www.scientific.net/KEM.326-328.999
Citation
Y. Shinhara, T. Tokuda, F. Suzumura, K. Ohtani, R. G. Wang, M. Kido, "Nondestructive Detection of Delamination of Thermally Sprayed Material Using ESPI", Key Engineering Materials, Vols. 326-328, pp. 999-1002, 2006
Online since
December 2006
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$32.00
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