Viscoelastic Analysis With Nanoindentation DMA

Viscoelasticity can be studied using Dynamic Mechanical Analysis (DMA) during Nanoindentation. By applying controlled oscillatory stress the resulting strain can easily be measured. An elastic material will have stress and strain in phase while a viscous-elastic material will have strain lagging stress. In many applications during quality control and R&D, it is important to reliably test this behavior. For example, polymer coatings, like that found on solar panels and medical devices, need to be studied by DMA Nanoindentation to understand the transition between viscous and elastic properties. The behavior of polymers is greatly affected by time and temperature which can greatly affect the long term longevity of a device if the properties are not well understood. These results will be used to better understand the life cycle of the polymer coating among others.

Application Note: http://www.nanovea.com//Application%20Notes/nanoindentation-dma.pdf