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Smart Structures and Systems
  Volume 2, Number 3, July 2006 , pages 237-251
DOI: https://doi.org/10.12989/sss.2006.2.3.237
 


Applications of piezoelectric sensors in geotechnical engineering
Xiangwu Zeng

 
Abstract
    Piezoelectric sensors have many applications in geotechnical engineering, especially in characterizing soils through measurement of wave velocities. Since mechanical properties of a material are closely associated with wave velocities, piezoelectric sensors provide a reliable and non-destructive method for the determination of soil properties. This paper presents results of recent research on measuring stiffness of a wide range of soils such as clay, sand, and gravel, characterizing anisotropic properties of soil induced by external loading, measuring stiffness of base and subgrade materials in the pavement, determining soil properties in a centrifuge model during the flight of a centrifuge, and understanding wave propagation in granular materials under micro-gravity environment using this technique.
 
Key Words
    geotechnical engineering; piezoelectric sensors; stiffness; wave velocity.
 
Address
Department of Civil Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106-7201, USA
 

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