Wave velocity measurement in granular materials under micro-gravity

Xiangwu Zeng, Juan H. Agui, Masami Nakagawa

Research output: Contribution to conferencePaperpeer-review

2 Citations (Scopus)


Experiments were conducted at NASA Glenn Research Center on the 2.2 second drop tower facility to measure velocities of P and shear waves using piezoelectric sensors. A large amount of interesting data was generated, which showed a clear dependence of wave velocities on gravity. The measured wave velocities can be used to characterize mechanical properties of granular materials. This method offers a promising technique which is light-weight, non-intrusive, reliable, and continuous for monitoring performance and determining properties of granular materials under a wide range of gravities. Potential applications in space flight and surface exploration on the moon and Mars are discussed.

Original languageEnglish
Number of pages11
Publication statusPublished - 2005
Externally publishedYes
Event43rd AIAA Aerospace Sciences Meeting and Exhibit - Reno, NV, United States
Duration: Jan 10 2005Jan 13 2005


Other43rd AIAA Aerospace Sciences Meeting and Exhibit
Country/TerritoryUnited States
CityReno, NV

All Science Journal Classification (ASJC) codes

  • General Engineering


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