Effect of frequency on viscoelastic properties of materials
Keywords: DMA, Glass Transition, PMMA, temperature sweep, viscoelasticity
Effect of frequency on viscoelastic properties of materials
The viscoelastic properties of materials are highly dependent on the excitation frequency. While the glass transition is conventionally determined at a frequency of 1 Hz, the damping and modulus of materials can vary drastically and differently as a function of temperature and frequency. DMA analysis provides the key to perfect selection of the right materials for a specific end-use application requiring specific performance. The example opposite shows the dependence of the mechanical properties of EPDM (Ethylene Propylene Diene Monomer) material.
