| Abstract Scope |
Dielectric elastomers (DEs) are smart materials used in numerous modern mechatronics applications. However, the literature is invaded with inconsistent data related to their properties. Perhaps, this is due to the lack of standardized testing methods missing in reported works. This study (part of an ongoing long-term project) aims at resolving this issue by performing mechanical testing using standard ASTM D-412. Uniaxial tensile tests were performed on three commonly-used materials, VHB 4905, 4910, and Elastosil 2030. Several specimens were created with gauge lengths and widths measuring 50 mm and 15 mm, for VHB and Elastosil, respectively. Specimens were tested at strain rates of 0.01, 0.1, and 0.35 Hz, until either failure or a prescribed maximum displacement was reached. The results were analyzed in accordance with ASTM D-412. As expected, all three materials exhibited strong rate-dependent behavior. The results are compared against reported values in the literature, and discrepancies are pointed out. |