Physics
Scientific paper
Dec 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976rsci...47.1516t&link_type=abstract
Review of Scientific Instruments, vol. 47, Dec. 1976, p. 1516-1518.
Physics
1
Bending Vibration, Brittle Materials, Internal Friction, Load Testing Machines, Lunar Rocks, Modulus Of Elasticity, Q Factors, Basalt, Friction Measurement, Outgassing, Seismic Waves, Signal Fading, Wave Attenuation
Scientific paper
A flexural analog of the torsion pendulum for measuring the Young's modulus and the internal friction Q factor of brittle materials has been developed for Q greater than 10 to the 3rd measurements at a zero static stress and at 10 to the -7th strains of brittle materials in the Hz frequency range. The present design was motivated by the desire to measure Q in fragile lunar return samples at zero static stress to shed light on the anomalously low attenuation of seismic waves on the moon. The use of the apparatus is demonstrated with data on fused silica and on a terrestrial analog of lunar basalt.
Curnow J. M.
Tittmann B. R.
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