Scale effect of Young's modulus of highly oriented polymers |
| |
Authors: | S. V. Bronnikov O. S. Kuzmicheva V. I. Vettegren |
| |
Affiliation: | (1) Institute of High-Molecular-Weight Compounds, Russian Academy of Sciences, St. Petersburg;(2) Ioffe Physicotechnical Institute, St. Petersburg, Russian |
| |
Abstract: | The scale effect of the acoustic Young's modulus E of oriented polymer fibers has been experimentally revealed. If the fiber length L is smaller than its critical value L0, the modulus decreases proportionally to the logarithm of the fiber length. An increasing temperature causes a proportional increase in the slope dE/d(In L). The scale effect is explained by the influence of the specimen volume on the probability of initiation of intense thermal fluctuations, which cause a decline in the Young's modulus.Presented at the 10th International Conference on the Mechanics of Composite Materials (Riga, April 20–23, 1998).Translated from Mekhanika Kompozitnykh Materialov, Vol. 34, No. 6, pp. 839–846, November–December, 1998. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|