Physics
Scientific paper
Dec 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.302..215p&link_type=abstract
In ESA, Physics and Mechanics of Cometary Materials p 215-219 (SEE N90-19989 12-90)
Physics
3
Accumulations, Agglomeration, Coagulation, Interplanetary Dust, Mechanical Properties, Protoplanets, Simulation, Electrostatics, Fragmentation, Glass, Low Density Materials, Organic Compounds, Planetary Mantles
Scientific paper
In order to simulate the coagulation of protoplanetary dust particles and the electrostatic fragmentation of interplanetary dust, a technique for producing fluffy agglomerates consisting of core-mantle-particles was developed. Spherical glass with different size distributions (less than or equal to 30 microns and 40 to 80 microns) is used as core material. N-pentacosane is chosen as mantle material. The densities of the fluffy agglomerates vary from 0.6 to 0.9 g/cu cm and their porosity is ranging from 50 to 70 percent. The compaction behavior of the samples is investigated by measuring the pressure needed for a given compaction. Measurements of the tensile strength of the particles are carried out by means of electrostatic fragmentation. The derived values for the tensile strength range from approximately 10 to the 5th power to approximately 10 to the 7th power Pa.
Blum Jacques
Gruen Eberhard
Pinter Stephen
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