(149b) Tensile Strength of Cohesive Powders
AIChE Spring Meeting and Global Congress on Process Safety
2006
2006 Spring Meeting & 2nd Global Congress on Process Safety
Fifth World Congress on Particle Technology
Advances in the Mechanical Testing and Size Measurement of Powders
Tuesday, April 25, 2006 - 4:50pm to 5:10pm
A discussion of the porosity influence on the tensile strength of cohesive powders is given. Two models relating the tensile strength to microscopic parameters and porosity are reconsidered. Furthermore, experimental and DEM-simulation results are presented and compared to those models. In the simulations, the influence of friction the powder's tensile strength is analysed. A new, exponential relationship between the tensile strength and the powder's porosity is found, which also describes previous experimental data from the literature.
KEYWORDS: tensile strength of powders, porosity of powders, microscopic parameters, Rumpf equation
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