Dynamic Mechanical Analysis is a state-of-the-art technique for understanding how the mechanical properties of a material behave as a function of time, temperature
Fauske & Associates, LLC (FAI) uses this effective method for characterizing the viscoelastic behavior of plastics, rubbers, and other polymeric materials.What can be characterized by DMA:
The multi-frequency mode can assess viscoelastic properties as a function of frequency, while oscillation amplitude is held constant. These tests can be run at single or multiple frequencies, in time sweep, temperate ramp, or temperature step/hold experiments.
In this mode, frequency and temperature are held constant, and the viscoelastic properties are monitored as% strain or the stress is varied. This mode is primarily used to identify the Linear Viscoelastic Range (LVR).
With creep, the stress is held constant and deformation is monitored as a function of time. In stress relaxation, the strain is held constant and the stress is monitored vs. time.
In this mode, the temperature is held constant while stress or strain is ramped at a constant rate. This mode is used to generate stress/strain plots to obtain Young's Modulus. Alternatively, stress can be held constant with a temperature ramp while strain is monitored.Isotrain
With this mode,
|Measurement of Tg of Polymeric Materials
||Measuring Effect of Adhesive Coatings on Films
|Predicting Material Performance Using ITS||Measuring Packaging Films Using Creep|
Determining material properties for engineered materials to be used as input in Finite Element Modeling (FEM) or other analyses.
Characterization and prediction of failure modes for assembled components at service conditions.
Root cause analysis investigations - the in-service load on a component or material could be simulated to determine the evolution of the material properties before failure occurred.