Determination Of Thermal Sprayed Coatings Elastic Modulus Using Four Point Bending Test
Price
Free (open access)
Transaction
Volume
17
Pages
10
Published
1997
Size
967 kb
Paper DOI
10.2495/SURF970061
Copyright
WIT Press
Author(s)
M. Beghinf, L. Bertini, F. Frendo & E. Giorni
Abstract
The four point bending scheme was adopted to evaluate the in plane elastic modulus of a NiCoCrAlY-ZrOzO^CW thermal barrier coating, employed for gas turbine applications. Four experimental techniques have been set up, based on mesurement of mid section strain and displacement. Two specimen geometries and several substrate thicknesses were employed. Being the ratio of the coating to the substrate thickness generally small, a preliminary sensitivity analysis, based on errors propagation theory, was focused on the identification of the main sources of measurement uncertainties, in relation to the various techniques. Measur
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