Crack Patterns Resulting from High Strain-Rate Tests on Concrete

Abstract

Surface crack patterns were obtained for compression of small concrete specimens at high strain rates in a Split-Hopkinson pressure bar (SHPB) . Visible macrocracks were not discernible until the peak stress of the stress- strain curve. The peak stress and associated strain increase with increasing strain rate. Crack density (mm2/mm3) when plotted versus strain was found to increase very fast initially and then become asymptotic to a linear function of strain.... Split-Hopkinson pressure bar, High strain rate, Impulse loading, Crack density, Crack pattern, Concrete compression.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1992
Accession Number
ADA260240

Entities

People

  • C. Allen Ross

Organizations

  • University of Florida

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Air Force
  • Cameras
  • Civil Engineering
  • Compression
  • Compressive Strength
  • Computers
  • Concrete
  • Engineering
  • Failure Mode And Effect Analysis
  • High Speed Cameras
  • Image Converters
  • Materials
  • Measurement
  • Mechanics
  • Photographs
  • Strain Gages
  • Test Equipment

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Structural Health Monitoring of Composite Structures.