Chapter
Jul 11, 2012
Static Fatigue and Delayed Effects in Sand and Lunar Regolith
Authors: S.S. Nadukuru [email protected], S.M. O'Connor [email protected], and R.L. Michalowski [email protected]Author Affiliations
Publication: Earth and Space 2012: Engineering, Science, Construction, and Operations in Challenging Environments
Abstract
Time and rate effects play an important role in processing of granular materials. It is a known phenomenon that granular soils (sand, gravel) subjected to dynamic in situ compaction exhibit a delayed increase in cone penetration resistance. A hypothesis is suggested that this time-dependent effect is caused by the stress corrosion cracking of the micro-morphologic features on grain surfaces at the contacts between the grains. Lunar regolith is likely to be strongly affected by this phenomenon, as regolith grains have rich surface morphology due to absence of water and atmosphere in lunar environment.
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Earth and Space 2012: Engineering, Science, Construction, and Operations in Challenging Environments
Pages: 256 - 263
Copyright
© 2012 American Society of Civil Engineers.
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Published online: Jul 11, 2012
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S.M.ASCE
University of Michigan, Department of Civil and Environmental Engineering, Ann Arbor, MI 48109-2125. E-mail: [email protected]
S.M.ASCE
University of Michigan, Department of Civil and Environmental Engineering, Ann Arbor, MI 48109-2125. E-mail: [email protected]
F.ASCE
University of Michigan, Department of Civil and Environmental Engineering, Ann Arbor, MI 48109-2125. E-mail: [email protected]
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