Wave velocity measurement in granular materials under micro-gravity

Xiangwu Zeng; Juan H. Agui; Masami Nakagawa

doi:10.2514/6.2005-720

Wave velocity measurement in granular materials under micro-gravity

Xiangwu Zeng, Juan H. Agui, Masami Nakagawa

Department of Civil, Environmental and Ocean Engineering

Research output: Contribution to conference › Paper › peer-review

2 Scopus citations

Abstract

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 language	English
Pages	15769-15779
Number of pages	11
DOIs	https://doi.org/10.2514/6.2005-720
State	Published - 2005
Event	43rd AIAA Aerospace Sciences Meeting and Exhibit - Reno, NV, United States Duration: 10 Jan 2005 → 13 Jan 2005

Conference

Conference	43rd AIAA Aerospace Sciences Meeting and Exhibit
Country/Territory	United States
City	Reno, NV
Period	10/01/05 → 13/01/05

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10.2514/6.2005-720

Cite this

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abstract = "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.",

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AU - Nakagawa, Masami

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Wave velocity measurement in granular materials under micro-gravity

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