Journal of Materials Science

, Volume 17, Issue 10, pp 2955–2960 | Cite as

Crack velocities in natural rubber

  • A. N. Gent
  • P. Marteny
Article

Abstract

Measurements are reported of the limiting velocity of a running crack in biaxially stretched sheets of unfilled and carbon-black-filled natural rubber. The crack velocity was found to increase with the cleavage strain,e y , and also with the strain,e x , parallel to the direction of tearing, reaching values of over 100 m sec−1 at the highest strain levels employed. These crack velocities are shown to be close to those predicted by Mott's theory, i.e., about one-third of the velocity of sound, when a strong strain-dependence is recognized for the velocity of sound in rubber.

Keywords

Polymer Rubber High Strain Natural Rubber Strain Level 

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Copyright information

© Chapman and Hall Ltd. 1982

Authors and Affiliations

  • A. N. Gent
    • 1
  • P. Marteny
    • 1
  1. 1.Institute of Polymer ScienceThe University of AkronAkronUSA

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