Research Article
On the Tensile Tests of Polyurethane and Its Composites with Carbon Nanotubes
Figure 6
Tensile test with (a) a sudden increase of strain rate from 2.3 × 10−3 s−1 to 6.9 × 10−3 s−1 (age of the specimen was 32 days, t = 1 mm) and (b) a sudden decrease of strain rate from 6.9 × 10−3 s−1 to 2.3 × 10−3 s−1 (age of the specimen was 32 days, t = 0.5 mm).
| (a) |
| (b) |