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We report experiments on piles of cohesionless granular materials showing the effect of construction history on static stress distributions. Stresses under piles are monitored by sensitive capacitive techniques. The piles are formed either by pouring granular material from a funnel with a small outlet (localized source), or from a large sieve (homogeneous(More)
  • A. Canabal-Rey, M. Cannon, +11 authors F. Pazuchanics
  • 2006
– We have built a detector capable of locating high Z objects in the sampling (middle) region of the detector. As atomic number increases, radiation length rapidly decreases, yielding larger variance in scattering angle. Cosmic ray muon tomography works by tracking muons above the sampling region, and tracking them below the region as well. The difference(More)
The determination of triboelectric properties of the Martian dust would be critical for future human and robotic missions to Mars. Several major studies relating to future missions to Mars have highlighted the significance of electrostatic charge accumulation and its impact on various aspects of the mission due to tribocharging of the Mars dust. The(More)
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