PROPAGATION OF CP_ZING IN VISCOELASTIC MEDIA*

Up to now, the growth rate of a craze has been considered either constant or inversel] proportional to time. By taking into consideration the effect of the surrounding population of crazes, it is found that the craze growth rate is affected by the local effective stress acting in the vicinity of the craze. Measured data of craze length as a function of time are found to be greatly affected by local interactions. IBaS&-CR-1732_) pROPkG&TIO _ OF CR&ZI_G I _ _8_-16583 VI$COELkSTIC MEDI _ (minnesota Univ.) _0