Statistics – Applications
Scientific paper
Apr 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991ulpr.nasar....d&link_type=abstract
In its NASA Space Engineering Research Center for Utilization of Local Planetary Resources 8 p (SEE N91-24365 16-25)
Statistics
Applications
Construction Materials, Liquefaction, Lunar Bases, Lunar Soil, Mars Surface, Materials Tests, Mechanical Properties, Regolith, Additives, Cyclic Loads, Load Tests, Powder (Particles), Test Equipment
Scientific paper
Development of versatile engineering materials from locally available materials in space is an important step toward establishment of outposts such as on the moon and Mars. Here development of the technologies for manufacture of structural and construction materials on the moon, utilizing local lunar soil (regolith), without the use of water, is an important element for habitats and explorations in space. It is also vital that the mechanical behavior such as strength and flexural properties, fracture toughness, ductility, and deformation characteristics are defined toward establishment of the ranges of engineering applications of the materials developed. The objectives include two areas: (1) thermal liquefaction of lunar simulant (at about 1100 C) with different additives (fibers, powders, etc.); and (2) development and use of a traxial test device in which lunar simulants are first compacted under cycles of loading, and then tested with different vacuums and initial confining or insitu stress. The second area was described in previous progress reports and publications; since the presently available device allows vacuum levels up to only 10(exp -4) torr, it is recommended that a vacuum pump that can allow higher levels of vacuum is acquired.
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