WIT Press

Determination Of Thermal Sprayed Coatings Elastic Modulus Using Four Point Bending Test

Price

Free (open access)

Paper DOI

10.2495/SURF970061

Volume

17

Pages

10

Published

1997

Size

967 kb

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

Keywords