An Introduction to Dynamic Mechanical Analysis

An Introduction to Dynamic Mechanical Analysis

September 20, 2017

Begins at 11:00 am

Approx. Run Time: 1 hour

Dynamic Mechanical Analysis (DMA) is a thermoanalytical technique that measures the stiffness (modulus) and damping (tan delta) of polymeric materials to assess the viscoelastic properties as a function of time, temperature, and frequency. Polymeric materials display both elastic and viscous behavior simultaneously, and DMA can separate these responses. Polymers, composed of long molecular chains, have unique viscoelastic properties, which combine the characteristics ofelastic solidsandNewtonian fluids. 

As part of the DMA evaluation, a small deformation is applied to a sample in a cyclic manner. This allows the material’s response to stress, temperature, and frequency to be studied. The analysis can be in several modes, including tension, shear, compression, torsion, and flexure. DMA is a very powerful tool for the analysis of plastics and can provide information regarding: 

•Glass Transition 
•Softening Temperature 
•Creep Behavior 
•Stress Relaxation 
•Degree of Cure  

This webinar will provide an introductory look into DMA and how it can be applied to better understand plastic behavior, both long-term and short-term.


Jeffrey Jansen
The Madison Group