Biaxial compression of ceramic foamsThursday (08.10.2020) 15:30 - 15:50
A combination of unique properties makes ceramic foams applicable in a wide range of technical fields. In a variety of working conditions, they are subjected to multiaxial stresses, not to simple uniaxial one. Although some mathematical models have been proposed to analyze their mechanics under complex stress conditions, very little is known with respect to their real mechanical performances under biaxial load, and experimental data are greatly desired to valid the models. We employed the loading method of biaxial compression to study the mechanical behavior of reticulated porous ceramics (RPCs). A variety of complex stress conditions were generated by applying different loading routes, and respective failure surfaces were established for the foams studied, which were compared with theoretical models. We also correlated the mechanical behavior of RPCs under complex stress conditions to their micro and macrostructural arrangement, and some first results are discussed in this paper.