TY  - JOUR
AU  - Pecanac, G.
AU  - Bause, T.
AU  - Malzbender, J.
TI  - Ring-On-Ring Testing of Thin, Curved Bi-layered Materials
JO  - Journal of the European Ceramic Society
VL  - 31
SN  - 0955-2219
CY  - Amsterdam [u.a.]
PB  - Elsevier Science
M1  - PreJuSER-15931
SP  - 2037 - 2042
PY  - 2011
N1  - The author would like to thank CeramTec GmbH, Marktredwitz, Germany for providing the half-cells material. The research leading to these results was partly funded by the European Union's Seventh Framework Programme FP7/2007-2013 under grant agreement n<SUP>o</SUP> 228701.
AB  - The bi-axial ring-on-ring test is a convenient method to determine elastic modulus and fracture strength of brittle materials in plate geometry. However, standard analytical relationships appear to be limited to flat isotropic samples with discrete ratios of thickness to loading/support ring radii. In addition to the necessity to consider residual stresses due to differences in thermal expansion for bi-layered materials, the curvature of thin components complicates the analysis of the experimental data. Experimental and finite element modeling results are presented for thin curved bi-layered materials with substrates of different elastic behavior. Basis for the analysis are experimental results obtained for solid oxide fuel cells with anode substrates in oxidized and reduced state. A testing procedure and its limits are outlined that permits to extend the use of standard analytical relationships to curved bi-layered specimens with the aim to determine the properties of the mechanically dominating support material. (C) 2011 Elsevier Ltd. All rights reserved.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000292667300002
DO  - DOI:10.1016/j.jeurceramsoc.2011.05.021
UR  - https://juser.fz-juelich.de/record/15931
ER  -