Accession Number : ADA114298


Title :   Crack Velocities in Natural Rubber.


Descriptive Note : Technical rept.,


Corporate Author : AKRON UNIV OH INST OF POLYMER SCIENCE


Personal Author(s) : Gent,A N ; Marteny,P


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a114298.pdf


Report Date : May 1982


Pagination or Media Count : 31


Abstract : Measurements are reported of the limiting velocity of a running crack in biaxially stretched sheets of unfilled and carbon-black-filled natural rubber. (Author) The crack velocity was found to increase with the cleavage stain ey and also with the strain e(x) parallel to the direction of tearing, reaching values of over 100m/s 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 a sound in rubber.


Descriptors :   *Natural rubber , *Crack propagation , Cracks , Velocity , Strain(Mechanics) , Fracture(Mechanics) , Sound transmission , Mathematical models


Subject Categories : Elastomers and Rubber
      Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE