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[PPS02-P03] Tensile strength of particle layers of irregularly shaped particles: Dependence on particle size and filling factor
Keywords:tensile strength, particle size, filling factor
However, the results of Brazilian disk tests on agglomerates of irregularly shaped particles show that the tensile strength depends more strongly on the filling factor than on the square of the filling factor. In the case of irregularly shaped particles, the size dependence of interparticle forces is expected to be different from that of perfect spheres, and thus the size dependence of tensile strength is not simple.
In this study, we investigated the tensile strength of agglomerates consisting of graphite particles of several microns in size. The agglomerates were prepared by pressing the particles in a mold. By varying the maximum applied force, agglomerates with different filling factors between 0.27 and 0.55 were obtained. The tensile strength was found to depend on the filling factor to the power of about 4.5. The tensile strength was found to be dependent on the particle size to the power of -2.5±1.0 by comparison with the results of a previous study (Bischoff+, 2020). The results of the graphite particle adhesion measurement and the tensile strength including the results of the measurement will also be discussed.