Duomorph Sensing for Laboratory Measurement of Shear Modulus

Abstract

The shear modulus of a sediment is directly related to shear wave velocity, and essential geoacoustic parameter not easily measured in the laboratory. Further, both shear modulus and shear wave velocity are a function of the effective stress on a sediment. The objective of this research is to develop a simple laboratory test procedure to measure the shear modulus of a sediment under controlled loading conditions. To do this, a Duomorph has been constructed similar to ones designed by Briar at al. (1). Compressional wave velocity has been measured using the NORDA compressional wave transducers before and after consolidation to validate the duomorph results. Initial results indicate that the concept is feasible and continued testing is planned. Duomorph, Shear modulus, Geotechnical properties, Reprints.

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Document Details

Document Type
Technical Report
Publication Date
Nov 02, 1988
Accession Number
ADA204973

Entities

People

  • Dawn Lavoie
  • Samatha K. Breeding

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Bulk Modulus
  • Classification
  • Elastic Properties
  • Engineering
  • Governments
  • Laboratory Procedures
  • Laboratory Tests
  • Measurement
  • Modulus Of Elasticity
  • National Governments
  • Secondary Waves
  • Security
  • Shear Modulus
  • Standards
  • Strain Gages
  • United States
  • United States Government

Readers

  • Geotechnical Engineering.
  • Mechanical Engineering/Mechanics of Materials.
  • Technical Research and Report Writing.