Measurements of the Apparent and Real Densities of Carbon-Carbon Composites and Structural Graphites

Abstract

We developed a method and a set of measuring devices for rapid determination of the apparent and real densities of structural graphites and carbon-carbon composites and compared the results with the corresponding data of conventional procedures. The values of the apparent density obtained on a device GeoPyc 1360 are higher than “standard” values that can be attributed to pseudoliquid environment thus used, whereas the values of real density obtained on AccuPyc 1340 are below standard which can be attributed to closed pores present in the specimen in case of non-destructive analysis. The divergence decreases as the degree of sample fragmentation increases.