Manufacturer: ZwickRoell GmbH & Co KG
Brief description: Electrodynamic testing machine for performing fatigue and service life tests, as well as for determining the viscoelastic properties of plastics.
Specimens: Plastics, fiber-reinforced and filled plastics, metals
Applications: Electrodynamic testing machine for performing fatigue and endurance tests under tensile, compressive, and bending loads. Both dynamic and static tests can be performed in a temperature range from -80°C to 250°C. The viscoelastic properties of plastics can be determined using dynamic mechanical analysis (DMA). Software-supported analysis of the storage modulus E' and the loss modulus E'' enables sensitive determination of the glass transition temperature TG of plastics.
The software calculates the following results using both the energy method (integration of the hysteresis loop) and Fourier transformation:
| Characteristic value | Symbol | Unit |
| Loss factor | tan δ | - |
| Dynamic modulus | E* | MPa |
| Storage modulus | E´ | MPa |
| Loss modulus | E´´ | MPa |
| Dynamic stiffness | k* | N/mm |
| Elastic stiffness | k´ | N/mm |
| Viscous stiffness | k´´ | N/mm |
| Available energy | Wavailable | J |
| Energy loss | Wloss | J |
| Technical Data | |
| Fmax dynamic | ± 3000 N |
| Piston stroke | 60 mm |
| Speed range | 1.5 m/s |
| Maximum frequency | 120 Hz |
| Repeatability | ± 2 µm |
| Temperature chamber | Temperature range -80 °C to +250 °C |
