Journal Published Online: 01 September 1990
Volume 13, Issue 3

Frequency Response of Diaphragm Pore Pressure Transducers in Dynamic Centrifuge Model Tests

CODEN: GTJODJ

Abstract

A theoretical relation for estimating the frequency response of diaphragm pore pressure transducers is derived by considering the interaction between the diaphragm, porous cap, air, and pore fluid inside the transducer. Using this relation, the frequency response of a pore pressure transducer under several centrifuge modeling environments is studied. The results indicate that the viscous drag imposed by the porous cap on the pore fluid can significantly reduce the sensitivity of the transducer to high frequency pore pressure fluctuation. This may impair the accuracy of dynamic pore pressure measurements in high-g centrifuge modeling of dynamic events if viscosity scaling is used.

Author Information

Lee, F-H
National University of Singapore, Singapore
Pages: 7
Price: $25.00
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Stock #: GTJ10158J
ISSN: 0149-6115
DOI: 10.1520/GTJ10158J