Wednesday  |  Carnegie III  |  02:30 PM–02:50 PM

#13262, Evaluating the Effect of the Carbon Black on the Crack Growth Behavior of Natural Rubber Sheets with Large Deformation and the Strain Distribution

This study evaluates the effect of the carbon black (CB) on the strain distribution in the vicinity of a crack in natural rubber (NR). In addition, the difference in crack growth behavior due to difference of the amount of CB is also evaluated. For this purpose, the crack growth behavior is observed on rubber test specimens with various of the amounts of CB. Then, the images obtained with a high-speed camera are analyzed by using digital image correlation (DIC). From this experiment, the relationship between tearing energy and crack growth rate is obtained for NR. It is revealed only the specimen filled the most CB is not broken. This result suggests that the dissipation process at the crack tip differs depending on the amount of CB.

Hotaka Mitamura   Aoyama Gakuin University
Keisuke Iizuka   Aoyama Gakuin University
Satoru Yoneyama   Aoyama Gakuin University