Crack Velocity Measurements in Solithane 113.

Abstract

An experimental study of crack propagation speeds in a highly viscoelastic polymer, Solithane 113, is presented in this report. Loadings were applied to precracked sheet specimens over a wide range of rates. Resulting crack speed were found to vary from .003 to 1600 in/sec (.00008 to 40 m/s). The primary purpose of this study was to investigate the transition from quasistatic to dynamic crack propagation in viscoelastic materials. It is believed that this transition depends strongly on the viscoelastic material properties. These properties vary widely with time for strongly viscoelastic materials such as Solithane 113 in the modulus transition range above the glass transition temperature. The results showed that the crack speed varied with stress intensity factor raised to a power of 6, in good agreement with previous studies for this material.

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Document Details

Document Type
Technical Report
Publication Date
Jan 12, 1982
Accession Number
ADA110010

Entities

People

  • S. R. Swanson

Organizations

  • University of Utah

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Cells
  • Chemical Engineering
  • Crack Propagation
  • Crack Tips
  • Engineering
  • Industrial Engineering
  • Load Cells
  • Materials
  • Measurement
  • Mechanical Properties
  • Military Research
  • Rayleigh Waves
  • Solid Propellants
  • Stress Intensity Factors
  • Stresses
  • Universities

Readers

  • Materials Science (Mechanical Engineering).
  • Mathematics or Statistics
  • Nanofabrication and Microfabrication.