Rock Disintegration by Pulsed Liquid Jets

Abstract

Experiments are reported on the breakage of granite, limestone and sandstone by pulsed water jets using a Voitsekhovsky-type cumulation nozzle with jet velocities up to 1800 m/sec, a jet diameter of 0.716 cm, and piston impact energies up to 65,000 Joules. Data on the specific energy for single pulse spall craters in the face of 30 cm cubic rock samples is plotted against the specific pressure (the ratio of jet stagnation pressure to rock compressive strength). The specific energy decreases rapidly as the jet stagnation pressure is increased from 1.43 to 3.95 times the compressive strength.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1972
Accession Number
AD0737621

Entities

People

  • Paul E. Brockert
  • William C. Cooley

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Compressive Strength
  • Construction
  • Energy
  • Energy Transfer
  • Failure Mode And Effect Analysis
  • Gas Guns
  • Gun Barrels
  • Guns
  • High Pressure
  • Hydrogen Embrittlement
  • Kinetic Energy
  • Liquid Jets
  • Materials
  • Measurement
  • Pressure Measurement
  • Stagnation Pressure
  • Water Jets

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Mechanical Engineering/Mechanics of Materials.
  • Pulsed Power and Plasma Physics.