Grout/Soil Interaction and Velocity Gage Emplacement for Ground-Shock Measurement.

Abstract

Analytical work aimed at establishing velocity gage emplacement procedures for ground-shock measurement is reported. Finite element calculations were performed using nonlinear, inelastic material models, in support of experiments at WES using artificial soil specimens in the Small Blast Load Generator. The investigations covered a wide range of borehole/free-field impedances under a variety of interface conditions. Interface bond rather than impedance matching was identified as the principal requirement for fidelity of velocity measurement. Velocity gage canisters are, therefore, recommended to be locked to the free field with an expansive grout in the vicinity of the gage. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 18, 1976
Accession Number
ADA037098

Entities

People

  • James A. Malthan
  • Mysore B. Balachandra

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Blast Loads
  • Elastic Properties
  • Engineers
  • Explosives
  • Field Tests
  • Frequency
  • Gages
  • Geometry
  • Ground Shock
  • Grout
  • Materials
  • Measurement
  • Modulus Of Elasticity
  • Radial Stress
  • Shear Modulus
  • Stiffness

Readers

  • Explosive Engineering.
  • Pavement Materials Engineering.